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Hans-René Bjørsvik's picture

Hans-René Bjørsvik

Professor
  • E-mailHans.Bjorsvik@uib.no
  • Phone+47 55 58 34 52
  • Visitor Address
    Realfagbygget, Allégt. 41
    Room 
    3016
  • Postal Address
    Postboks 7803
    5020 BERGEN

Organic synthesis and organometallic reactions (involving Pd and Ru NHC complexes) in organic synthesis are the primary focus of Bjørsvik research group. The main goal of the most of the research in progress in the group are to develop new and better cataytic processes, focusing both on improvement of synthetic processes and methods as well as the design of new ligands with the goal to improved selectivity and activity of the final catalyst. For this work, multivariate statistical and matemathical methods are frequently used.

The synthesis of N-heterocycles
Within this research activity, the molecular scaffolds of particular interests are benzo[c]cinnolines, carbazoles, and imidazoles.  The imidazoles are of particular interest as such compounds can be used as precursors for NHC ligands used in organometallics for various catalysts, for example for olefin metathesis, Suzuki cross-coupling, and oxidation catalysts. Recent years NHC-Ag complexes have also been target molecules in a project in medicinal chemistry investigating such compounds as potential reagens agains 

Oxidation and Free Radicals in Organic Synthesis 
Free organic radicals for synthetic applications, development of green chemistry methods for the oxidation reactions in organic synthesis has been an long standing research activity in the research group. This research activity involves also studies of antioxidants and development of new total syntheses of such compounds.

Flow Chemistry
Development and investigation of continuous flow organic synthesis reactor systems is an important long standing project in the group. We have successfully developed a novel approach for flow chemistry that is realized in a milli-reactor system that we have named multi-jet oscillation disk (MJOD) milli reactor system. A patent application  was submitted (2005) for this system, and a company that was named Fluens Synthesis AS was established.

 

Regular courses

  • FARM236 Medicinal Chemistry
  • KJEM131 Organic Synthesis and Analysis (past)
  • KJEM232 Experimental organic synthesis
  • KJEM233 Organic mass spectrometry (past)
  • KJEM335 Physical Organic Chemistry (past)

Special Topics

  • Organometallic reactions in organic synthesis
  • N-heterocyclic carbenes in synthesis
  • Heterocyclic chemistry
  • Experimental Design and Modelling in Organic Synthesis
  • Free Radical Reactions in Synthetic Organic Chemistry
  • Instrumental methods in organic synthesis

 

Academic article
  • Show author(s) 2020. Synthesis of N-aryl- and N-alkyl-substituted imidazolium silver complexes: Cytotoxic screening by using human cell lines modelling acute myeloid leukaemia. ChemMedChem. 1509-1514.
  • Show author(s) 2020. Hit to leads with cytotoxic effect in leukemic cells: Total synthesis intermediates as a molecule treasure chest. ChemMedChem. 862-870.
  • Show author(s) 2020. Functionalization of the Imidazole Backbone by Means of a Tailored and Optimized Oxidative Heck Cross-Coupling. Advanced Synthesis and Catalysis. 5079-5092.
  • Show author(s) 2019. A two-step telescoped continuous flow switchable process leading to nitriles, diaziridine or hydrazine derivatives. Reaction Chemistry & Engineering. 41-51.
  • Show author(s) 2018. Synthesis of Boscalid via a three-step telescoped continuous flow process implemented on a MJOD reactor platform. Reaction Chemistry & Engineering. 550-558.
  • Show author(s) 2018. Synthesis of Amides from Alcohols and Amines Through a Domino Oxidative Amidation and Telescoped Transamidation Process. European Journal of Organic Chemistry. 4436-4445.
  • Show author(s) 2018. Carbazomycin G: Method Development and Total Synthesis. European Journal of Organic Chemistry. 1984-1992.
  • Show author(s) 2018. Amino-TEMPO Grafted on Magnetic Multi-Walled Nanotubes: An Efficient and Recyclable Heterogeneous Oxidation Catalyst. European Journal of Organic Chemistry. 1405-1412.
  • Show author(s) 2018. A Co2B Mediated NaBH4 Reduction Protocol Applicable to a Selection of Functional Groups in Organic Synthesis. European Journal of Organic Chemistry. 3416-3425.
  • Show author(s) 2017. A concise synthesis to Benzo[c]cinnolines via 2,2’-dinitro-1,1’-biphenyls attained from a novel tailored Suzuki cross-coupling. ChemistrySelect. 9387-9390.
  • Show author(s) 2016. Synthesis of the carbazole scaffold directly from 2-aminobiphenyl by means of tandem C–H activation and C–N bond formation. European Journal of Organic Chemistry. 5474-5479.
  • Show author(s) 2016. Indium powder as the reducing agent in the synthesis of 2-amino-1,1′-biphenyls. Tetrahedron Letters. 1224-1226.
  • Show author(s) 2016. Continuous flow synthesis of the iodination agent 1,3-diiodo-5,5-dimethyl-imidazolidine-2,4-dione telescoped with semi-continuous product isolation. Reaction Chemistry & Engineering. 379-386.
  • Show author(s) 2016. Continuous flow synthesis concatenated with continuous flow liquid–liquid extraction for work- up and purification: selective mono- and di- iodination of the imidazole backbone. Reaction Chemistry & Engineering. 436-444.
  • Show author(s) 2016. A highly efficient Pd(PPh3)4-catalyzed Suzuki cross-coupling method for the preparation of 2-nitrobi­phenyls from 1-chloro-2-nitrobenz­enes and phenylboronic acids. European Journal of Organic Chemistry. 1344-1354.
  • Show author(s) 2015. The Baeyer-Villiger oxidation versus aromatic ring hydroxylation: Competing organic peracid oxidation mechanisms explored by multivariate modelling of designed multi-response experiments. Journal of Physical Organic Chemistry. 619-628.
  • Show author(s) 2015. Stille cross-coupling for the functionalization of the imidazole backbone: Revisit, improvement, and applications of the method. European Journal of Organic Chemistry. 3506-3512.
  • Show author(s) 2015. Scope and mechanistic limitations of a sonogashira coupling reaction on an imidazole backbone. European Journal of Organic Chemistry. 4658-4666.
  • Show author(s) 2015. Controlling the course of a two-way switchable Pd-catalyzed process by means of empirical multivariate models. ChemCatChem. 2196-2205.
  • Show author(s) 2015. 4-alkylated silver-N-heterocyclic carbene (NHC) complexes with cytotoxic effects in leukemia cells. ChemMedChem. 1522-1527.
  • Show author(s) 2014. Multivariate optimization of a cyclopropanation, the key step in the synthesis of 3,3,4,4-tetraethoxybut-1-yne. Organic Process Research & Development. 891-896.
  • Show author(s) 2014. Continuous flow olefin metathesis using a multijet oscillating disk reactor as the reaction platform. Organic Process Research & Development. 1509-1515.
  • Show author(s) 2013. Fast halogenation of some N-heterocycles by means of N,N-dihalo-5,5-dimethylhydantoin. Advanced Synthesis and Catalysis. 499-507.
  • Show author(s) 2013. A Three-Way Switchable Process for Suzuki Cross-Coupling, Hydrodehalogenation, or an Assisted Tandem Hydrodehalogenation and Suzuki Cross-Coupling Sequence. Advanced Synthesis and Catalysis. 3231-3243.
  • Show author(s) 2012. Synthesis of phenylboronic acids in continuous flow by means of a multijet oscillating disc reactor system operating at cryogenic temperatures. Organic Process Research & Development. 1121-1130.
  • Show author(s) 2012. Separation of reaction product and palladium catalyst after a heck coupling reaction by means of organic solvent nanofiltration. ChemSusChem. 188-193.
  • Show author(s) 2012. Organocatalyzed epoxidation of alkenes in continuous flow using a multi-jet oscillating disk reactor. ChemSusChem. 261-265.
  • Show author(s) 2012. Extraction, isolation, and purification of analytes from samples of marine origin - A multivariate task. Journal of chromatography. B. 46-53.
  • Show author(s) 2011. Synthetic Route Discovery and Introductory Optimization of a Novel Process to Idebenone. Organic Process Research & Development. 673-680.
  • Show author(s) 2011. Multijet Oscillating Disc Millireactor: A Novel Approach for Continuous Flow Organic Synthesis. Organic Process Research & Development. 997-1009.
  • Show author(s) 2010. An optimized process to 10-bromo-1-decanol. Organic Process Research & Development. 1215-1220.
  • Show author(s) 2010. A switchable oxidation process leading to two various versatile pharmaceutical intermediates. Organic Process Research & Development. 1379-1384.
  • Show author(s) 2009. Synthesis of a new bidentate NHC–Ag(I) complex and its unanticipated reaction with the Hoveyda–Grubbs first generation catalyst. Tetrahedron. 7186-7194.
  • Show author(s) 2009. A novel simple and efficient bromination protocol for activated arenes. Tetrahedron Letters. 831-833.
  • Show author(s) 2007. The first imidazolium-substituted metal alkylidene. Organometallics. 4383-4385.
  • Show author(s) 2007. Green and efficient synthesis of bidentate Schiff base Ru catalysts for olefin metathesis. Journal of Organic Chemistry. 3561-3564.
  • Show author(s) 2006. Efficient and green telescoped process to 2-methoxy-3-methyl-[1,4]benzoquinone. Journal of Organic Chemistry. 1703-1706.
  • Show author(s) 2005. Synthesis of methoxy-substituted phenols by peracid oxidation of the aromatic ring. Journal of Organic Chemistry. 7290-7296.
  • Show author(s) 2005. Synthesis of 2-Nitro and 2,2’-Dinitro Biphenyls by means of the Suzuki Cross-Coupling reaction. Journal of Organic Chemistry. 9591-9594.
  • Show author(s) 2005. A novel efficient deoxygenation process for N-heteroarene N-oxides. Journal of Organic Chemistry. 3218-3224.
  • Show author(s) 2004. Online Spectroscopy and Multivariate Data Analysis as a Combined Tool for Process Monitoring and Reaction Optimization. Organic Process Research & Development. 495-503.
  • Show author(s) 2004. Nitroarene Catalyzed Oxidation with Sodium percarbonate or Sodium perborate as the Terminal Oxidant. Tetrahedron Letters. 8615-8620.
  • Show author(s) 2004. Investigations of a novel process to the framework of benzo[c]cinnoline. Journal of Organic Chemistry. 7720-7727.
  • Show author(s) 2002. Organic Processes to Pharmaceutical Chemicals Based on Fine Chemicals from Lignosulfonates. Organic Process Research & Development. 279-290.
  • Show author(s) 2002. N-Acylation Reactions Performed in Aqueous Reaction Medium. Synthesis of Iodixanol. Organic Process Research & Development. 113-119.
  • Show author(s) 2002. Highly Selective and Efficient Conversion of Alkyl Aryl and Alkyl Cyclopropyl Ketones to Aromatic and Cyclopropane Carboxylic Acids by Aerobic Catalytic Oxidation: A Free-Radical Redox Chain Mechanism. Synlett. 610-612.
  • Show author(s) 2002. Carboxylic acids from methyl aryl ketones by means of a new composite aerobic oxidation process. Tetrahedron Letters. 4985-4987.
  • Show author(s) 2002. A New Modified “Montanari Oxidation Process” by Means of Chlorine Dissolved in the reaction Solvent as Oxidant and TEMPO as Catalyst: Oxidation of 3-S-Quinuclidinol to 3-Quinuclidinone. Organic Process Research & Development. 197-200.
  • Show author(s) 2002. A Highly Selective Aerobic Oxidation Process Catalysed by Electron Deficient Nitroarenes via Single Electron Transfer Processes. Journal of Organic Chemistry. 7493-7500.
  • Show author(s) 2001. Process for the production of iodinated organic x-ray contrast agents. US Patent.
  • Show author(s) 2001. New Selective Oxidation Reactions by Nitroarenes in Basic Medium Involving Electron Transfer Processes. Organic Process Research & Development. 136-140.
  • Show author(s) 2001. A Selective Process for N-Alkylation in Competition with O-Alkylation. Boric acid as a Cheap and Effective Protecting Group Applicable for Industrial Scale Synthetic Processes. Organic Process Research & Development. 472-478.
  • Show author(s) 2001. A Bromine Catalysed Free-Radical Oxidation of Acetamides From Primary and Secondary Alkylamines by H_2O_2. Chemical Communications. 523-524.
  • Show author(s) 2000. Organic Process Research and Development by Means of Statistical Experimental Design, Multivariate Modelling, and Mechanistic Interpretation. La Chimica e l'Industria. 8 pages.
  • Show author(s) 2000. High Selectivity in the Oxidation of Mandelic acid derivatives and in O-methylation of protocatechualdehyde. New Processes for Synthesis of Vanillin, iso-Vanillin and Heliotropin. Organic Process Research & Development. 9 pages.
  • Show author(s) 1999. Stability of Iodixanol=3,3',5,5'-tetrakis(2,3-dihydroxypropylcarbamoyl)2,2',4,4',6,6'-hexaiodo-N,N'-(2-hydroxypropane-1,3-diyl)diacetanilide towards acid, base, oxygen, heat and light. Journal of Clinical Pharmacy and Therapeutics. 227-235.
  • Show author(s) 1999. Polar Effects in Free-Radical Reactions. the Paradox of Reductions of alkyl Iodides and Reductive alkylation of Alkenes by Strong Oxidants (t-BuOOH,Pb(OAc)4. Journal of the American Chemical Society. 7760-7765.
  • Show author(s) 1999. Fine Chemicals from Lignosulfonates. 1. Synthesis of Vanillin by Oxidation of Lignosulfonate. Organic Process Research & Development. 330-340.
  • Show author(s) 1999. Fine Chemicals from Lignosulfonates 2. Synthesis of Veratric acid from Acetoveratrone. Organic Process Research & Development. 341-346.
  • Show author(s) 1999. Electrophilic Aromatic Alkylation by Hydroperoxides, Dompetition Between Ionic and Radical Mechanism. Journal of Organic Chemistry. 8812-8815.
Report
  • Show author(s) 2006. Organic Free Radicals. Program and abstract collection from the EUCHEM conference on organic free radicals, Scandinavian collaboration for the 2006 conference. .
Lecture
  • Show author(s) 2018. «Medisinsk teknologi - Nytt studie ved UiB».
  • Show author(s) 2018. Synthesis of targeting molecules as tracers for PET and anticancer pro-drugs: investigation of tumor drug distribution.
  • Show author(s) 2018. Synthesis of targeting molecules as tracers for PET and anticancer pro-drugs: investigation of tumor drug distribution.
  • Show author(s) 2018. Novel probes for hypoxia and NTR-reporter gene imaging .
  • Show author(s) 2018. Grønnkjemi og organisk syntese.
  • Show author(s) 2018. Developing Novel Probes for Hypoxia. PET3D Consortium meeting.
  • Show author(s) 2018. About Department of Chemistry UoB and HUS Centre for Nuclear Medicine and PET – “the home for ESR 9 and ESR10 and short about the research activities”.
  • Show author(s) 2013. New Methods for the Synthesis of Marine Imidazole Alkaloids.
  • Show author(s) 2013. Development and Scale-up of a Synthesis leading to N-tosyl-4-iodoimidazole.
Popular scientific lecture
  • Show author(s) 2018. Hvordan lage medisiner.
  • Show author(s) 2010. Krysskoblinger i organisk sytese – Nobelprisen i kjemi 2010.
  • Show author(s) 2009. Erfaringer og resultater fra et forskningsprosjekt som resulterte i etablering av teknologiselskapet Fluens Synthesis.
Academic lecture
  • Show author(s) 2019. Synthesis of targeting molecules : PET and therapeutics.
  • Show author(s) 2018. «Cystine-glutamate antiporter (xCT) inhibitors to overcome radioresistance in brain cancer» .
  • Show author(s) 2018. xCT inhibitors to overcome radioresistance in brain cancer - Some Chemistry. .
  • Show author(s) 2018. Transition metal catalyzed sodium borohydride reduction: applications in organic synthesis .
  • Show author(s) 2018. Synthesis of targeting molecules as tracers for PET and anticancer pro-drugs: investigation of tumor drug distribution.
  • Show author(s) 2018. Synthesis of targeting molecules as tracers for PET and anticancer pro-drugs: investigation of tumor drug distribution .
  • Show author(s) 2018. Novel probes for hypoxia and NTR-reporter gene imaging.
  • Show author(s) 2018. Multi-gram Synthetic Processes Involving Continuous Flow Reactors Telescoped with Semi-Continuous Work-Up and Purification Steps.
  • Show author(s) 2018. A new synthetic method for the preparation of amides.
  • Show author(s) 2017. Synthesis of the Carbazole Scaffold by Means of Tandem C–H Activation and C–N Bond Formation .
  • Show author(s) 2017. Structural modifications of a NHC(-Ag) skeleton with the purpose to optimize the cytotoxic properties .
  • Show author(s) 2016. Synthesis of backbone iodinated imidazole: Continious flow reaction concatenated with continuous work-up steps.
  • Show author(s) 2016. Synthesis of 11C-labelled sulfasalazine as a PET tracer .
  • Show author(s) 2016. Synthesis of 11C labeled sulfasalazine for PET imaging of drug delivery across the blood brain barrier and uptake in tumor tissue.
  • Show author(s) 2016. Synthesis of 11C labeled sulfasalazine for PET imaging of drug delivery across the blood brain barrier and uptake in tumor tissue.
  • Show author(s) 2016. Oral presentation: Flow synthesis concatenated with continuous and semi-continious work-up steps.
  • Show author(s) 2016. Continuous Flow Reactions Concatenated with Continuous Work-up Steps.
  • Show author(s) 2015. Batch and flow processes leading to the iodinating agent 1,3-diiodo-5,5-dimethylimidazolidine-2,4-dione.
  • Show author(s) 2012. Continuous flow synthesis of phenylboronic acids using a multijet oscillating disc (MJOD) telescoped flow reactor system.
  • Show author(s) 2012. Continuous flow synthesis of arylboronic acids.
  • Show author(s) 2012. Continuous flow synthesis at cryogenic temperatures: Synthesis of arylboronic acids in a telescoped flow reactor system.
  • Show author(s) 2010. Towards a novel synthesis of idebenol.
  • Show author(s) 2010. Synthesis in Continuous Flow by means of the Multi-Jet Oscillating Disk milli-Reactor Technology.
  • Show author(s) 2010. Organic Phase Nano-Filtration for Isolation of Palladium Catalyst after Heck Coupling Reaction.
  • Show author(s) 2010. Multi-Jet Oscillating Disk (MJOD) Reactor Technology for Challenging Reactions in Continuous Flow Organic Synthesis: Heterogeneous Reaction Mixtures, Two-Phase Reactions and Catalytic Reactions.
  • Show author(s) 2010. Continuous Flow Olefin Metathesis using the Novel Multi-Jet Oscillating Disk Reactor System as Reaction Platform.
  • Show author(s) 2009. Olefin Metathesis in Continuous Flow using the Novel MJOD milli-reactor Technology.
  • Show author(s) 2008. Organic Synthesis in Continuous Flow by means of the Novel MJOD Reactor System.
  • Show author(s) 2008. Organic Synthesis in Continuous Flow by means of MJOD milli-Reactor System.
  • Show author(s) 2008. Organic Synthesis in Continuous Flow by means of MJOD Reactor System.
  • Show author(s) 2007. Organic Synthesis in Continuous Flow by means of MJOD Reactor System.
  • Show author(s) 2007. Organic Synthesis in Continuous Flow.
  • Show author(s) 2007. Multi-Jet Oscillating Disc Linear Reactor: Towards a Continuous Flow milli-Reactor System for Organic Synthesis.
  • Show author(s) 2006. Multi-Jet Oscillating Disc Reactor: Towards Continuous Flow Milli-Reactor for Organic Synthesis.
  • Show author(s) 2005. Theory-based design of catalysts for olefin metathesis.
  • Show author(s) 2004. Pre-Experimental Design.
  • Show author(s) 2004. Multivariate Data Analysis and On-Line Spectroscopy in Process Research and Optimising.
  • Show author(s) 2004. Building, Analysis and Use of Descriptor Matrices in Multivariate Experimental Design.
  • Show author(s) 2003. Development of Organic Syntheses, Processes, and Reactions by Means of Multivariate Methodology.
  • Show author(s) 2003. DFT investigation of the Pd-catalyzed Suzuki-coupling of nitro-bromo-benzenes and nitrophenyl boronic acids.
  • Show author(s) 2002. Process Evolution by means of Experimental Design and Modelling.
  • Show author(s) 2002. Oxidation Processes Catalyzed by Electron Deficient Nitroarenes via Single Electron Transfer Processes.
  • Show author(s) 2002. Organisk syntese og grønn kjemi (Organic synthesis and green chemistry).
  • Show author(s) 2001. Synthesis of Benzo[c]cinnolines.
  • Show author(s) 2001. Single electron transfer processes in Organic Synthesis.
  • Show author(s) 2001. Organic Processes Optimisation by Means of Experimental Design and Multivariate Modelling, and Response Surface Methodology.
  • Show author(s) 2001. Optimisation of Organic Processes by Means of Multivariate Methods (a serie of four lectures).
  • Show author(s) 2001. New Oxidation Methods Involving Electron Transfer Processes. 1,3-Dinitrobenzene as Stoichiometric Oxidant or as Catalyst with Molecular Oxygen as Terminal Oxidant.
  • Show author(s) 2000. Selective Oxidations by Nitroarenes in Basic Medium Involving Electron Transfer Processes.
  • Show author(s) 2000. Hydroperoxides as Alkylating Reagents.
  • Show author(s) 1999. Oxidation of Ketones into Carboxylic acids with Molecular Oxygen.
  • Show author(s) 1999. Free Radicals in Oxidation Processes. From Academic Research to Industrial Process and Vise Versa.
Compendium
  • Show author(s) 2010. IUPAC ICOS-18 Proceedings.
  • Show author(s) 2009. Introduction to design and modelling of organic reactions and processes. Lecture notes from course for PhD students and researchers of the research training network InSolEx.
  • Show author(s) 2002. Introduction to design and modelling of organic reactions and processes.
Doctoral dissertation
  • Show author(s) 2018. Novel Synthetic Methodology and Total Syntheses of Highly Functionalized Carbazoles and Benzo[c]cinnolines .
  • Show author(s) 2018. Continuous flow processing an enabling technology. Amidation, oxidation, reduction, and other essential synthetic reactions.
Interview
  • Show author(s) 2009. TEMA: NATURVITENSKAPEN OG FREMTIDEN Grønt fra grunnen.
  • Show author(s) 2006. Fluens Synthesis AS - kjemiprofessor ved UiB starter nytt teknologifirma.
  • Show author(s) 2005. Kjemisk oppfinnelse til Europa.
  • Show author(s) 2003. FINE CHEMICALS Process design and improvement tools help chemists and engineers quickly deliver cleaner, safer, and more cost-effective methods.
Academic chapter/article/Conference paper
  • Show author(s) 2007. Data Analysis: Calibration of NIR Instruments by PLS Regression. 18 pages.
  • Show author(s) 2001. Chapter 8: Data Analysis:PLS Calibration of NIR instruments by PLS regression. 23 pages.
Poster
  • Show author(s) 2019. Synthesis and optimization of 10H-phenothiazine analogues for the inhibition of autophagy.
  • Show author(s) 2019. Synthesis and investigation of Ag-NHC complexes with cytotoxic properties towards cell lines modelling acute myeloid leukemia .
  • Show author(s) 2019. Response surface modelling of microwave assisted bischler-napieralski reaction: synthesis of eudostomin H.
  • Show author(s) 2019. Drug repurposing: sulfasalazine as a new anticancer treatment. Study of tumour drug distribution through pet and MRI imaging.
  • Show author(s) 2019. Developing novel PET tracers for hypoxia .
  • Show author(s) 2018. Synthesis and investigation of NHC-Ag complexes with cytotoxic properties.
  • Show author(s) 2017. Synthesis and investigation of NHC-Ag complexes with cytotoxic properties.
  • Show author(s) 2017. Carbazole synthesis from 2-aminobiphenyl via intramolecular C-H activation and C-N bond formation .
  • Show author(s) 2015. Expedite synthesis of 2-Nitrobiphenyls from Chloroarenes using the Suzuki cross-coupling reaction.
  • Show author(s) 2013. Synthesis of Isodecaprene and other Intermediates for a New Total Synthesis of CoQ10.
  • Show author(s) 2013. Multivariate Optimization of Microwave Assisted Bischler-Napieralski Reaction.
  • Show author(s) 2013. Development of a New Process Leading to N,N’-Diiodo-5,5-Dimethylhydantoin.
  • Show author(s) 2012. A simple synthetic route to 4-(5)-substituted imidazoles.
  • Show author(s) 2010. Synthesis of Bulky1,2-Diamines as Precursors for Sterically Hindered NHC Ligands.
  • Show author(s) 2010. Selective Epoxidation of Alkenes in Continuous Flow usingthe Multi-Jet Oscillating Disk milli-Reactor System.
  • Show author(s) 2010. Reaction mixture purification by means of organic phase nano-filtration: Removal of palladium catalyst after Heck coupling and hydrogenation reactions.
  • Show author(s) 2010. Continuous Flow Synthesis of 2-bromo-3,4,5-trimethoxytoluene by means of a Multi-Jet Oscillating Disk milli-Reactor System as the Reaction Platform. Pumping a Slurry of KBr as the only Bromine Source.
  • Show author(s) 2010. A Green and Efficient Bromination Process.
  • Show author(s) 2009. Multi-Jet Oscillating Disk milli-Reactor a Novel Approach for Conducting Organic Synthesis in Continuous Flow.
  • Show author(s) 2009. A Green and Efficient Bromination Process.
  • Show author(s) 2008. The first imidazolium-substituted metal alkylidene.
  • Show author(s) 2008. Olefin Metathesis in Continuous Flow by means of the Novel Fluens Synthesis Multi-Jet Oscillating Disk (MJOD) milli-Reactor System.
  • Show author(s) 2008. Investigation and Optimization of Cross-Coupling Metathesis by means of Statistical Experimental Design and Multivariate Regression.
  • Show author(s) 2008. A Three Step Efficient Synthesis to Dissymmetric Substituted Carbazole Derivatives.
  • Show author(s) 2007. Olefin Metathesis in Continuous Flow by means of the Novel Fluens Synthesis Multi-Jet Oscillating Disk milli-Reactor System.
  • Show author(s) 2007. Fluens Synthesis Continuous Flow milli-Reactor System.
  • Show author(s) 2007. Fluens Synthesis Continuous Flow milli-Reactor System.
  • Show author(s) 2006. Quantitative Structure Quantitative Structure−Activity Relationship Activity Relationships of Ruthenium catalysts for Olefin Metathesis.
  • Show author(s) 2006. Fluens Synthesis Continuous Flow milli-Reactor System.
  • Show author(s) 2006. Fluens Synthesis Continuous Flow milli-Reactor System.
  • Show author(s) 2006. Design of Catalysts for Olefin Metathesis: Development and Application of a Novel QSAR/DFT-Strategy.
  • Show author(s) 2006. A Novel Efficient Deoxygenation Process for N-Heteroarene N-Oxides.
  • Show author(s) 2005. DFT-driven multivariate prediction of activity for olefin metathesis catalysts.
  • Show author(s) 2005. DFT-Based Approach for QSAR-Prediction of Olefin Metathesis Catalysts.
  • Show author(s) 2005. A New Benign Metal Free Deoxygenation Process for N-Heteroarene N-Oxides.
  • Show author(s) 2004. A Novel Synthetic Process to Benzo[c]cinnoline Derivatives.
  • Show author(s) 2002. Aromatic carboxylic acids from a New Green Oxidation Process.
  • Show author(s) 2002. A Short Synthetic Pathway to N,N'-Diphenyldiazenes and N-Oxide diphenyldiazene.
  • Show author(s) 2002. A Selective Non-Metal Catalysed Aerobic Oxidation Process for the Preparation of Aromatic Carboxylic Acids from Aromatics with Oxygen Functionalised Benzylic Carbon.
  • Show author(s) 2001. Oxidation of Acetamides Ivolving a Bromine Catalyse Free-radical Reaction with Hydrogen peroxide as the Terminal Oxidant.
  • Show author(s) 2001. A Selective Process for N-alkylation in Competition with O-alkylation.
  • Show author(s) 2001. A Selective Process for N-alkylation in Competition with O-alkylation.
  • Show author(s) 2001. A Selective Process for N-alkylation in Competition with O-alkylation.
  • Show author(s) 2000. Vanillin Synthesis and Analytical standards.
  • Show author(s) 2000. Selective Oxidations by Means of a New Alkaline Nitroarene Oxidation Procedure.
  • Show author(s) 1999. Peroxides as New Electrophilic Agents of Aromatic Alkylations.
Academic literature review
  • Show author(s) 2014. Synthesis of imidazole alkaloids originated in marine sponges. Studies in Natural Products Chemistry. 33-57.
  • Show author(s) 2007. Ruthenium alkylidene complexes of Chelating amine Ligands. Organometallics. 5803-5814.
  • Show author(s) 2006. Quantitative structure-activity relationships of ruthenium catalysts for olefin metathesis. Journal of the American Chemical Society. 6952-6964.

More information in national current research information system (CRIStin)

Recent publications

  • Vijayaragavan Elumalai and Hans-René Bjørsvik.* Indium powder as a reducing agent in the synthesis of 2-amino-1,1'-biphenyls. Tetrahedron Letters 201657, 1224–1226. 
  • Vijayaragavan Elumalai, Alexander H. Sandtorv, and Hans-René Bjørsvik.* A Highly Efficient Pd(PPh3)4-Catalyzed Suzuki Cross-Coupling Method for the Preparation of 2-Nitrobiphenyls from 1-Chloro-2-Nitrobenzenes and Phenylboronic acids. European Journal of Organic Chemistry 2016, 1344-1354. 
  • Marta Ferreri, Audun Drageset, Cristian Gambarotti, and Hans-René Bjørsvik.* Continuous flow synthesis of the iodination agent 1,3-diiodo-5,5-dimethyl-imidazolidine-2,4-dione telescoped with semi-continuous product isolation. Reaction Chemistry & Engineering 20161, 379-386. 
  • Audun Drageset and Hans-René Bjørsvik.* Continuous flow synthesis cocatenated with continious flow liquid-liquid extraction for work-up and purification: selective mono- and di-iodination of the imidazole backbone. Reaction Chemistry & Engineering 20161, 436-444. 
  • Hans-René Bjørsvik* and Vijayaragavan Elumalai. Synthesis of the Carbazole Scaffold Direcly form 2-amino-biphenyl by means of tandem C-H activation and C-N bond formation. European Journal of Organic Chemistry 2016, 5474-5479. 
  • Vijayaragavan Elumalai and Hans-René Bjørsvik.* A Concise Synthesis to Benzo[c]cinnolines via 2,2´-Dinitro-1,1´-Biphenyls Attained from a Novel Tailored Suzuki Cross-Coupling. ChemistrySelect 20172, 9387-9390
  • Vijayaragavan Elumalai, Cristian Gambarotti, and Hans-René Bjørsvik.*  Carbazomycin G: Method Development and Total SynthesisEur. J. Org. Chem. 2018, 1984–1992. 
  • Frida Johanne Lundevall, Vijayaragavan Elumalai, Audun Drageset,  Christian Totland, Hans-René Bjørsvik.* A Co2B mediated NaBH4 reduction protocol applicable for a selection of functional groups in organic synthesisEur. J. Org. Chem. 2018, 3416-3425.
  • Audun Drageset,  Hans-René Bjørsvik.* Synthesis of amides from alcohols and amines thru a domino oxidative amidation and telescoped transamidation processEur. J. Org. Chem. 2018, 4436-4445.
  • Audun Drageset,  Vijayaragavan Elumalai, Hans-René Bjørsvik.* Synthesis of Boscalid via a Three-step Telescoped Continuous Flow Process Implemented on a MJOD Reactor Platform. Reaction Chemistry & Engineering 20183, 550-558

A thesis project in organic synthesis will deal with the development of one or more steps of a synthesis leading either to a key intermediate or to a target molecule of a total synthesis. Moreover, other investigations may be required in order to support a proposal for a reaction mechanisms.

 The synthetic task can be: (1) investigation of an one step reaction, (2) design and development of a multi-step synthesis of either academic or commercial industrial interest, or (3) a study that involves investigation of a synthetic transformation where the goal is to maximize the profit of an industrial synthesis, improve the yield and / or the selectivity. Target molecule or intermediate can be an important intermediate products or preferably a biologically active compound that can be used as a pharmaceutical chemical. Usually, the target molecule, or model molecule is a N-heterocyclic natural compound. 

A project in advanced spectroscopy and organic synthesis will start out with searching the chemical literature and studies of previous research work. This is followed by introductory experiments in the laboratory, where techniques for synthesis laboratory will be used (performing reaction under different conditions, filtration, drying, extraction, crystallization, distillation, flash chromatography, thin layer chromatography, etc.). Of instrumental analytical methods, different chromatographic methods such as GC, GC-MS and HPLC can be necessary  for quantification.

Various pectroscopy and spectrometry are of paramount importance in this project, and will involve the utilization of mass spectrometry (MS), infrared spectroscopy (ATR FT-IR) and nuclear magnetic resonance (1H NMR and 13C NMR and other nucleuses if necessary) will be used for identification and structure elucidation of target products and eventually side- and by-products that have been produced. 

Keywords: Synthesis, N-heterocyclic compounds, natural products, metal organic reactions, 1H NMR, 13C NMR, MS, FT-IR, fiber optical raman, fiber optical Near-IR, reaction monitoring

  • Organic Chemistry and Synthesis
  • Heterocyclic chemistry, in particular N-heterocycles
  • Oxidation and antioxidants
  • Free radical chemistry
  • NHC ligands and transition metals for catalysis
  • Flow chemistry technologies and flow synthesis
  • Microwave in organic synthesis
  • Optimization and investigation of organic syntheses and processes by means of statistical experimental design and multivariate regression
  • Fiber optical spectroscopy for reaction monitoring