申请人:NIPPON ZEON CO., LTD.
公开号:EP0133548A1
公开(公告)日:1985-02-27
A process for producing alpha, beta-unsaturated ketones represented by the following general formula
wherein R, represents a hydrocarbon radical, R2 represents an organic radical bonded through a carbon-carbon bond, R3 and R4 represent a hydrogen atom or a hydrocarbon radical, and R1, R2, R3 and R4 may be straight-chained or form a ring in arbitrary combinations, which comprises contacting an alpha-disubstituted-beta-keto acid ester represented by the general formula
wherein R,, R2, R3 and R4 are as defined, and R5, R6, R7 and R8 represent a hydrogen atom or a hydrocarbon radical, with a catalyst consisting essentially of (a) a compound of a platinum-group metal and optionally (b) a monodentate ligand (b).
一种生产由以下通式表示的α、β-不饱和酮的工艺
其中 R 代表烃基,R2 代表通过碳-碳键结合的有机基,R3 和 R4 代表氢原子或烃基,且 R1、R2、R3 和 R4 可以是直链或以任意组合形成环,该工艺包括与通式所代表的 α-二取代-β-酮酸酯接触
其中 R、R2、R3 和 R4 如所定义,R5、R6、R7 和 R8 代表氢原子或烃基,催化剂主要包括 (a) 铂族金属化合物和可选的 (b) 单齿配体 (b)。