CHIRAL PD ORGANOMETALLIC COMPLEXES AS CATALYSTS IN CYCLOPROPANATION REACTIONS

Citation
R. Navarro et al., CHIRAL PD ORGANOMETALLIC COMPLEXES AS CATALYSTS IN CYCLOPROPANATION REACTIONS, Journal of molecular catalysis. A, Chemical, 105(3), 1996, pp. 111-116
Citations number
32
Categorie Soggetti
Chemistry Physical
ISSN journal
13811169
Volume
105
Issue
3
Year of publication
1996
Pages
111 - 116
Database
ISI
SICI code
1381-1169(1996)105:3<111:CPOCAC>2.0.ZU;2-6
Abstract
Asymmetric cyclopropanation of styrene with diazoacetic esters is perf ormed firstly using chiral amino acidato complexes of Pd(LI) containin g a C,N-cyclometallated group as an ancillary ligand as catalyst precu rsors. In general these catalytic systems provide good conversion to t he corresponding cyclopropyl derivatives with a moderate trans selecti vity, although the stereoselectivities obtained were low. With the use of chiral catalysts and chiral diazoacetic esters the diastereoselect ivities were slightly improved.