[EN] ASYMMETRIC SYNTHESIS OF ORGANIC COMPOUNDS<br/>[FR] SYNTHÈSE ASYMÉTRIQUE DE COMPOSÉS ORGANIQUES
申请人:ISIS INNOVATION
公开号:WO2013054131A1
公开(公告)日:2013-04-18
The present invention provides processes for the production of chiral compounds in a stereoisomeric excess. The present processes involve reacting a hydrometallated alkene compound with a compound comprising a conjugated -bond system under conditions such that the compounds undergo an asymmetric 1,4- or 1,6-conjugate addition reaction, generating a chiral compound in a stereoisomeric excess. The reaction is performed in the presence of a metal catalyst, which catalyst preferably comprises a non-racemic chiral ligand.
Asymmetric Conjugate Addition of Alkylzirconium Reagents to α,β-Unsaturated Lactones
作者:Eleanor E. Maciver、Rebecca M. Maksymowicz、Nancy Wilkinson、Philippe M. C. Roth、Stephen P. Fletcher
DOI:10.1021/ol501292x
日期:2014.6.20
The asymmetric synthesis of β-substituted lactones by catalytic asymmetric conjugate addition of alkyl groups to α,β-unsaturatedlactones is reported. The method uses alkylzirconium nucleophiles prepared in situ from alkenes and the Schwartz reagent. Enantioselective additions to 6- and 7-membered lactones proceed at rt, tolerate a wide variety of functional groups, and are readily scalable. The method
The present invention provides processes for the production of chiral compounds in a stereoisomeric excess. The present processes involve reacting a hydrometallated alkene compound with a compound comprising a conjugated-bond system under conditions such that the compounds undergo an asymmetric 1,4- or 1,6-conjugate addition reaction, generating a chiral compound in a stereoisomeric excess. The reaction is performed in the presence of a metal catalyst, which catalyst preferably comprises a non-racemic chiral ligand.