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
A practical and efficient method for enantioselective allylation of aldehydes
作者:E. J. Corey、Chan Mo Yu、Sung Soo Kim
DOI:10.1021/ja00196a082
日期:1989.7
La reaction d'(allyl-2 diphenyl-4,5 ditosyl-1,3)diazaborolidines-1,3,2 chirales avec des aldehydes fournit des alcools homoallyliques de maniere enantioselective
La 反应 d'(allyl-2 diphenyl-4,5 ditosyl-1,3)diazaborolidines-1,3,2 手性 avec des aldehydes Fournit des alcools homoallyliques de maniere enantioselective
Allylation Reactions of Aldehydes with Allylboronates in Aqueous Media: Unique Reactivity and Selectivity that are Only Observed in the Presence of Water
Zn(OH)2‐catalyzed allylation reactions of aldehydes with allylboronates in aqueous media have been developed. In contrast to conventional allylboration reactions of aldehydes in organic solvents, the α‐addition products were obtained exclusively. A catalytic cycle in which the allylzinc species was generated through a B‐to‐Zn exchange process is proposed and kinetic studies were performed. The key
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
Highly Diastereo- and Enantioselective Reagents for Aldehyde Crotylation
作者:Blaine M. Hackman、Pamela J. Lombardi、James L. Leighton
DOI:10.1021/ol0480731
日期:2004.11.1
Two new, crystalline solid, storable, and highly enantioselective reagents for aldehyde crotylation have been developed. Both (cis and trans) crotylsilane reagents are easily prepared in bulk, require trivial reaction conditions, and provide the homoallylic alcohol products with near diastereo- and enantiospecificity in many cases.