Chiral Phosphoramide-Catalyzed Enantioselective Addition of Allylic Trichlorosilanes to Aldehydes. Preparative Studies with Bidentate Phosphorus-Based Amides
作者:Scott E. Denmark、Jiping Fu、Michael J. Lawler
DOI:10.1021/jo052203h
日期:2006.2.1
that more than one Lewis basic moiety (phosphoramide) is involved in the rate- and stereochemistry-determining step of enantioselectiveallylation, bidentate chiral phosphoramides were developed. Different chiral phosphoramide moieties were connected by tethers of methylene chains of varying length. The rate and enantioselectivity of allylation with allyltrichlorosilane promoted by the bidentate phosphoramides
Cobalt-Catalyzed Diastereo- and Enantioselective Reductive Allyl Additions to Aldehydes with Allylic Alcohol Derivatives via Allyl Radical Intermediates
enantioenriched homoallylic alcohols with a remarkably broad scope of allyl groups that can be introduced. Mechanistic studies indicated that allyl radical intermediates were involved in this process. These new discoveries establish a new strategy for development of enantioselective transformations through capture of radicals by chiral Co complexes, pushing forward the frontier of Co complexes for enantioselective
Catalytic, Enantioselective Addition of Substituted Allylic Trichlorosilanes Using a Rationally-Designed 2,2‘-Bispyrrolidine-Based Bisphosphoramide
作者:Scott E. Denmark、Jiping Fu
DOI:10.1021/ja016552e
日期:2001.9.1
A Highly Enantioselective Indium-Mediated Allylation Reaction of Aldehydes
作者:Teck-Peng Loh、Jian-Rong Zhou、Zheng Yin
DOI:10.1021/ol990316f
日期:1999.12.1
[GRAPHICS]The first highly enantioselective indium mediated allylation of aldehydes was reported. In most cases, good chemical yields and moderate to high enantioselectivies (up to 90% ee) were obtained in the presence of external chiral ligands, (+)-cinchonine and (-)-cinchonidine.