申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0115860A2
公开(公告)日:1984-08-15
A process for preparing an optically active 4-hydroxy-2- cylopentenone of the formula:
wnerem R1 is a nyarogen atom or a methyl group, R2 is an alkyl group, an alkenyl group or an alkynyl group and the asterisk (*) indicates an asymmetric configuration, which comprises subjecting an optically active 4-cylopentenone-alcohol of the formula:
wherein R1 and R2 are each as defined above, the asterisk (*) indicates an asymmetric configuration and the substituents R1 and R2 take a cis-configuration to rearrangement while maintainig the original steric configuration.
一种制备具有光学活性的 4-羟基-2-环戊烯酮的工艺,其式如下: 其中 R1 是炔原子或甲基,R2 是烷基、烯基或炔基,星号(*)表示不对称构型,该工艺包括将具有光学活性的 4-环戊烯酮醇进行重排,其式如下: 其中 R1 和 R2 各自如上定义,星号(*)表示不对称构型,取代基 R1 和 R2 采用顺式构型,同时保持原有的立体构型。