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.
[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.
Catalytic asymmetric carbon–carbon bond formation using alkenes as alkylmetal equivalents
作者:Rebecca M. Maksymowicz、Philippe M. C. Roth、Stephen P. Fletcher
DOI:10.1038/nchem.1394
日期:2012.8
Catalytic asymmetric conjugate addition reactions with organometallicreagents are powerful reactions in synthetic chemistry. Procedures that use non-stabilized carbanions have been developed extensively, but these suffer from a number of limitations that prevent their use in many situations. Here, we report that alkylmetal species generated in situ from alkenes can be used in highly enantioselective