Synthesis of optically active hydrotrispyrazolylborate ligand and its usesin copper catalysed enantioselective cyclopropanation reaction

Authors
Babbar, P Brunner, H Singh, UP
Citation
P. Babbar et al., Synthesis of optically active hydrotrispyrazolylborate ligand and its usesin copper catalysed enantioselective cyclopropanation reaction, I J CHEM A, 40(3), 2001, pp. 225-227
Citations number
21
Categorie Soggetti
Chemistry
Journal title
INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY
ISSN journal
03764710 → ACNP
Volume
40
Issue
3
Year of publication
2001
Pages
225 - 227
Database
ISI
SICI code
0376-4710(200103)40:3<225:SOOAHL>2.0.ZU;2-T
Abstract
We report the synthesis and characterization of optically active hydrotris- (4,5,6,7-tetrahydro-7,8,8-trimethyl- 4,7-methanoindezolyl)borate [NaHB(camp hpz)(3)] (2) ligand. bl situ catalysts - copper(I) or copper(II)/[NaHB(camp hpz)(3)] catalysed the cyclopropanation of styrene and ethyl diazoacetate w ith ee's of up to 40 % and chemical yield of up to 67 %.