Chiral ligands with pyridine donors in transition metal catalyzed enantioselective cyclopropanation and hydrosilylation reactions

Authors
Chelucci, G Gladiali, S Sanna, MG Brunner, H
Citation
G. Chelucci et al., Chiral ligands with pyridine donors in transition metal catalyzed enantioselective cyclopropanation and hydrosilylation reactions, TETRAHEDR-A, 11(16), 2000, pp. 3419-3426
Citations number
14
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
TETRAHEDRON-ASYMMETRY
ISSN journal
09574166 → ACNP
Volume
11
Issue
16
Year of publication
2000
Pages
3419 - 3426
Database
ISI
SICI code
0957-4166(20000825)11:16<3419:CLWPDI>2.0.ZU;2-3
Abstract
Copper(I) and rhodium(I) complexes prepared in situ from [Cu(OTf)(C6H6)(0.5 )] and [Rh(cod)Cl](2) with a range of chiral 2,2'-bipyridines, 5,6-dihydro- 1,10-phenanthrolines, 1,10-phenanthrolines and 2,2':6',2 "-terpyridines wer e assessed as chiral catalysts for the enantioselective cyclopropanation of styrene with diazoacetates and for the hydrosilylation of acetophenone wit h diphenylsilane. Enantioselectivities up to 68% in the cyclopropanation an d up to 32% in the hydrosilylation were obtained. (C) 2000 Published by Els evier Science Ltd.