申请人:Givaudan Corporation
公开号:US04318855A1
公开(公告)日:1982-03-09
The instant invention provides a new and improved method of preparing .alpha.-hydroxycarbonyl compounds, particulary substituted cyclopent-2-en-2-ol-1-ones and substituted 3-hydroxy-2(5H)-furanones. The novel sequence involves a number of novel intermediates including substituted 2-cyanocyclopentanones, substituted 2-cyano-2-hydroxycyclopentanones, and 2-cyano-2-hydroxyvalero-.gamma.-lactones.
这项新的发明提供了一种制备α-羟基羰基化合物的新方法,特别是取代的环戊-2-烯-2-醇-1-酮和取代的3-羟基-2(5H)-呋喃酮。这个新颖的序列涉及一系列新颖的中间体,包括取代的2-氰基环戊酮、取代的2-氰基-2-羟基环戊酮和2-氰基-2-羟基戊酸-γ-内酯。