申请人:National Distillers and Chemical Corporation
公开号:US04487946A1
公开(公告)日:1984-12-11
A process is provided wherein cyclopropyl ketones are readily isomerized to 2,3-dihydrofurans. The process involves the thermal rearrangement of 1,1-disubstituted-2-alkylcyclopropanes or 1,1-disubstituted-2-alkenylcyclopropanes, wherein one of the substituents in the 1-position is an acyl group, to 2,4,5-trisubstituted-2,3-dihydrofurans employing an onium compound as the catalyst.
提供了一种方法,其中环丙基酮易于异构化为2,3-二氢呋喃。该过程涉及1,1-二取代-2-烷基环丙烷或1,1-二取代-2-烯基环丙烷的热重排,其中1-位置的取代基之一是酰基基团,使用离子化合物作为催化剂将其转化为2,4,5-三取代-2,3-二氢呋喃。