A Catalytic Asymmetric Reaction Involving Enolizable Anhydrides
摘要:
In the presence of a highly efficient novel bifunctional organocatalyst at low loadings under mild conditions, enolizable homophthalic anhydrides can be added to a range of aromatic and aliphatic aldehydes to give dihydroisocoumarins, with excellent yields and diastereo- and enantiocontrol (up to 99% ee).
Disclosed herein is enantioselective synthetic method comprising reacting an enolisable C
4
-C
50
organic anhydride with a second compound selected from the group consisting of an aldehyde, a ketone, an aldimine, a ketimine or a Michael Acceptor in the presence of a bifunctional organocatalyst. The reaction may find particular utility in the enantioselective synthesis of medicinally relevant heterocycles, such as dihydroisocoumarins and dihydroisoquinolinones.
A Catalytic Asymmetric Reaction Involving Enolizable Anhydrides
作者:Claudio Cornaggia、Francesco Manoni、Esther Torrente、Sean Tallon、Stephen J. Connon
DOI:10.1021/ol300453s
日期:2012.4.6
In the presence of a highly efficient novel bifunctional organocatalyst at low loadings under mild conditions, enolizable homophthalic anhydrides can be added to a range of aromatic and aliphatic aldehydes to give dihydroisocoumarins, with excellent yields and diastereo- and enantiocontrol (up to 99% ee).