Water is welcome! Chiral α‐substituted β,γ‐epoxides have been prepared in good yields and with excellent enantioselectivities in a one‐pot synthetic procedure. The key reaction of this process, which involves a series of uninterrupted sequential reactions, is an asymmetric aldol reaction of aqueous chloroacetaldehyde mediated by a diarylprolinol derivative (see scheme).
Process for producing optically active 4-chloro-3-hydroxybutanal compound
申请人:Hayashi Yujiro
公开号:US08742176B2
公开(公告)日:2014-06-03
The invention relates to a method of producing optically active 4-chloro-3-hydroxybutanal compound (2) by reacting chloroacetaldehyde with aldehyde compound (1) in the presence of optically active pyrrolidine compound (5).
wherein each symbol is as defined in the specification.