Skip navigation
Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/4168
Title: Optically active pyrazolylborate: Synthesis, characterization and uses in enantioselective cyclopropanation reaction
Authors: Singh U.P.
Babbar P.
Hassler B.
Nishiyama H.
Brunner H.
Published in: Journal of Molecular Catalysis A: Chemical
Abstract: Optically active sodium salt of tetrakis(4,5,6,7-tetrahydro-7,8,8-trimethyl-2H-4,7-methanoindazolyl)borate, [NaB(camp-hpz)4] (1) was synthesized by the reaction of 4,5,6,7-tetrahydro-7,8,8-trimethyl-2H-4,7-methanoindazole and NaBH4 whereas sodium salt of hydrotris((-)-3(5)-methyl-1-phenylethylaminomethylpyrazolyl)borate, [NaHB(P1)3] (2) was prepared by the reaction of (-)-3(5)-methyl-1-phenylethylaminomethylpyrazole with NaBH4. Their uses in various metal-catalysed enantioselective cyclopropanation reactions of styrene and several diazoacetates gave the corresponding trans- and cis-phenyl-cyclopropane-1-carboxylates with moderate to reasonably good enantioselectivities. © 2002 Elsevier Science B.V. All rights reserved.
Citation: Journal of Molecular Catalysis A: Chemical (2002), 185(43832): 33-39
URI: https://doi.org/10.1016/S1381-1169(02)00075-4
http://repository.iitr.ac.in/handle/123456789/4168
Issue Date: 2002
Keywords: Copper, rhodium and ruthenium catalysts
Cyclopropanation
Enantioselectivity
Optical activity
Pyrazolylborate
ISSN: 13811169
Author Scopus IDs: 57203181883
6506387993
6701715527
7201928882
7402010801
Author Affiliations: Singh, U.P., Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247 667, India
Babbar, P., Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247 667, India
Hassler, B., School of Material Science, Toyohashi University of Technology, Toyohashi 441-8580, Japan
Nishiyama, H., School of Material Science, Toyohashi University of Technology, Toyohashi 441-8580, Japan
Brunner, H., Institut Für Anorganische Chemie, Universität Regensburg, D-93040 Regensburg, Germany
Funding Details: Authors (UPS and PB) are very grateful to Department of Science and Technology, Government of India, New Delhi, for financial support in the form of young scientist project (No. HR/OY/C-20/96).
Corresponding Author: Singh, U.P.; Department of Chemistry, Indian Inst. of Technology Roorkee, Roorkee 247 667, India; email: udaipfcy@rurkiu.ernet.in
Appears in Collections:Journal Publications [CY]

Files in This Item:
There are no files associated with this item.
Show full item record


Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.