Described herein is a process for the preparation of a mixture of compounds of formula
having a weight ratio of the cis-diastereomers to trans-diastereoisomers higher than 1:1, where R1 represents a C1-8 alkyl group, a C2-8 alkenyl group or a C2-8 alkynyl group, each optionally substituted with one or two of a C1-4 alkyl alkoxy ether group and/or a C1-4 alkyl carboxylester group and R2 represents a C1-6 alkyl, a C2-6 alkenyl or a C2-6 alkynyl group, each optionally substituted with a C1-4 alkyl alkoxy ether group, a carboxylic acid group or a C1-4 alkyl carboxylester group and compounds suitable in the process.
本文描述了一种制备式化合物混合物的工艺,该混合物的
化学式为
顺式-非对映异构体与反式-非对映异构体的重量比高于 1:其中 R1 代表 C1-8 烷基、C2-8 烯基或 C2-8 烷炔基,每个基团可选择被一个或两个 C1-4 烷基烷氧基醚基和/或 C1-4 烷基羧基酯基取代;R2 代表 C1-6 烷基、C2-6 烯基或 C2-6 烷炔基,每个基团可选择被一个 C1-4 烷基烷氧基醚基、一个羧基或一个 C1-4 烷基羧基酯基取代。