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

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

Fax: (905) 682-9020

Email: razvan.simionescu[at]brocku.ca

Publications

• 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, published online 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
• 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