Razvan Simionescu

Department of Chemistry

Razvan Simionescu

NMR Technologist

Department of Chemistry, Brock University
St. Catharines, Ontario, L2S 3A1

Office CRN 406 Phone: (905) 688-5550 ext. 5681

NMR Lab CRN 112 Phone: (905) 688-5550 ext. 6168

NMR Lab MC H207 Phone: (905) 688-5550 ext. 4171

Email: razvan.simionescu[at]brocku.ca



  • Yang QuMichael L. A. E. EassonJordan FroeseRazvan SimionescuTomas Hudlickyand Vincenzo De Luca, Completion of the seven-step pathway from tabersonine to the anticancer drug precursor vindoline and its assembly in yeast, Biological Sciences - Plant Biology 2015,
  • Nikonov G.I., Vyboishchikov S.F., Shirobokov O.G., Simionescu R., “Serendipitous metal catalyzed H–H/Si–H exchange”, accepted to Eur. J. Inorg. Chem. 2014,
  • Mary Ann A. Endoma-Arias, Jason Reed Hudlicky, Razvan Simionescu, Tomas Hudlicky,"Chemoenzymatic Formal Total Synthesis of ent-Codeine and Other Morphinans via Nitrone Cycloadditions and/or Radical Cyclizations. Comparison of Strategies for Control of C-9/C-14 Stereogenic Centers", Advanced Sythesis and Catalysis, February 2014
  • Andrey Khalimon, Stanislav K. Ignatov, Andrey I. Okhapkin, Razvan Simionescu, Lyudmila G. Kuzmina, Judith A. K. Howard, Georgii I. Nikonov Unusual "Structure, Fluxionality, and Reaction Mechanism of Carbonyl Hydrosilylation by Silyl Hydride Complex [(ArN=)Mo(H)(SiH2Ph)(PMe3)3]", Chemistry - A European Journal 2013, 19, 8573-8590 • May 13, 2013
  • David Hurem , Andrey G. Moiseev , Razvan Simionescu , and Travis Dudding, "A Detailed NMR- and DFT-Based Study of the Sakurai–Hosomi–Yamamoto Asymmetric Allylation Reaction", Journal of Organic Chemistry, J. Org. Chem., 78 (9), pp 4440–4445, April 2013
  • Yang, L.; Li, J.; Simionescu, R.; Yan, H*. Observation of two N2-isobutyrylguanine tautomers by NMR spectroscopy, Magn. Reson. Chem., Vol 51., Issue 1, pages 60-64, Jan. 2013
  • Mark Frampton, Razvan Simionescu, Paul M. Zelisko "Enzyme-mediated Synthesis of Silsesquioxanes", Silicon 04/2012; 1(1):47-56
  • Khalimon A. Y., Shirobokov O.G., Peterson E., Simionescu R., KuzminaL.G., Howard J.A.K., Nikonov, G. I."Mechanistic Aspects of Hydrolsilylation Catalyzed by (ArN=)Mo(H)(Cl)(PMe3)3", Inorg. Chem.2012,51 (7), pp 4300–4313
  • An Unexpected Mechanism of Hydrosilylation by a Silyl Hydride Complex of Molybdenum, Andrey Y. Khalimon, Stanislav K. Ignatov, Razvan Simionescu, Lyudmila G. Kuzmina, Judith A. K. Howard, and Georgii I Nikonov, Inorg. Chem., 2012, 51 (2), pp 754–7562012
  • Catalytic and stoichiometric reactivity of β-silylamido agostic complex of Mo: intermediacy of a silanimine complex and applications to multicomponent coupling, Khalimon, Andrey Y.; Simionescu, Razvan; Nikonov, Georgii I.,Journal of the American Chemical Society, 2011, 133(18), 7033-7053.
  • Some observations relating to the stability of the BODIPY fluorophore under acidic and basic conditions: Lijing Yang, Razvan Simionescu, Alan Lough and Hongbin Yan, Dyes and Pigments, 2011
  • Dauben–Michno oxidative transposition of allylic cyanohydrins — Enantiomeric switch of (–)-carvone to (+)-carvone, Jason R. Hudlicky, Lukas Werner, Vladislav Semak, Razvan Simionescu, and Tomas Hudlicky, Canadian Journal of Chemistry, 2011, 89:535-543, 10.1139/v11-026
  • Oleg G. Shirobokov, Serge I. Gorelsky, Razvan Simionescu, Lyudmila G. Kuzmina and Georgii I. Nikonov; The unexpected mechanism of carbonyl hydrosilylation catalyzed by (Cp)(ArN)Mo(H)(PMe3)  Chem. Commun., 2010, 46, 7831-7833
  • Frampton, MB; Simionescu, R; Dudding, T; Zelisko, PM. The Enzymatic Cleavage of Si-O Bonds: A Kinetics Analysis of the Biocatalyzed Hydrolysis of Phenyltrimethoxysilane. J. Mol. Cat. B: Enzymatic, 2010, 66, 105-112.
  • Design of Thermally Stable Versions of the Burgess Reagent: Stability and Reactivity Study, Thomas A. Metcalf, Razvan Simionescu, and Tomas Hudlicky*, J. Org. Chem. 2010, 75, 3447–3450
  • Mark Frampton, Razvan Simionescu and Paul M. Zelisko, “Enzyme-Mediated Synthesis of Silsesquioxanes”, Silicon 2009 , Volume 1, 47-56.
  • Peterson, E.; Khalimon, A. Y.; Simionescu, R.; Kuzmina, L.G.; Howard, J.A.K.; Nikonov, G. I. “Diversity of catalysis by an imido-hydrido complex of molybdenum. Mechanism of carbonyl hydrosilylation and silane alcoholysis.”, J. Am. Chem. Soc. 2009, 113, 1199-1209.
  • Andrey Y. Khalimon, Razvan Simionescu, Lyudmila G. Kuzmina, Judith A. K. Howard and Georgii I. Nikonov "Agostic NSi-H-Mo Complexes: From Curiosity to Catalysis" - Angew. Chem. Int. Ed. 2008, 47, 7701-7704
  • Stephan Ohnmacht, Ryan West, Razvan Simionescu, Jeffrey Atkinson. "Assignment of the 1H and 13C NMR of Tocotrienols".  Mag. Res. Chem. 2008 46(3), 287-294.
  • Zelisko, PM; Arnelien, KR; Dudding, T; Simionescu, R; Stanisic, H. Enzyme Mediated Cross-Linking of Silicone Polymers. Polymer Preprints, 2007, 48(2), 984-985.
  • Khalimon A. Y., Lin Z., Simionescu R., Vyboishchikov S. F., Nikonov G. I. “Persistent silylium ions stabilized by polyagostic Si-H-Si interactions”, Angew. Chem. Int. Ed. 2007, 46, 4530-4533.
  • Simionescu R., Poehlman W.F.S., Garland, W.J., Performance Support System for I-125 Monitoring in the McMaster University Nuclear, IEEE Transactions on Nuclear Science, Aug. 2006, Volume: 53, Issue: 4, Part 2, On page(s): 2328- 2334


Dept. of Chemistry
Brock University
500 Glenridge Ave.
St. Catharines, ON
Canada, L2S 3A1
Tel: (905) 688-5550 x3406

Administrative Assistant:
Marie Harris

Razvan Simionescu