New chiral 2,2 ': 6 ',2 ''-terpyridines as ligands for asymmetric catalysis: cyclopropanation and hydrosilylation reactions

Authors
Chelucci, G Saba, A Vignola, D Solinas, C
Citation
G. Chelucci et al., New chiral 2,2 ': 6 ',2 ''-terpyridines as ligands for asymmetric catalysis: cyclopropanation and hydrosilylation reactions, TETRAHEDRON, 57(6), 2001, pp. 1099-1104
Citations number
26
Categorie Soggetti
Chemistry & Analysis","Organic Chemistry/Polymer Science
Journal title
TETRAHEDRON
ISSN journal
00404020 → ACNP
Volume
57
Issue
6
Year of publication
2001
Pages
1099 - 1104
Database
ISI
SICI code
0040-4020(20010204)57:6<1099:NC2'6'>2.0.ZU;2-U
Abstract
A number of new chiral 2,2':6',2"-terpyridines were prepared and the corres ponding rhodium and ruthenium complexes were assessed as chiral catalysts f or the enantioselective hydrosilylation of acetophenone with diphenylsilane and for the cyclopropanation of styrene with ethyl diazoacetate. Enantiose lectivities up to 59% in the cyclopropanation and np to 13% in the hydrosil ylation were obtained. (C) 2001 Published by Elsevier Science Ltd.