Diastereomerically pure trans- and cis-4-tert-butylcylcohexanemethanols have been obtained by kinetic acylation of the diastereomeric alcohol in an organic medium and by kinetic deacylation of the diastereomeric acetate in an aqueous medium both in the presence of the same lipase (lipase PS, Pseudomonas sp., Amano). The reactions take place preferentially with the trans-isomers both in organic and aqueous media to give the trans-acetate with recovery of the cis-alcohol on acylation in an organic medium, and the trans-alcohol with recovery of the cis-acetate on deacylation in an aqueous medium.
在同一种
脂肪酶(
脂肪酶 PS,PSeudomonas sp.,Amano)的作用下,通过非对映醇在有机介质中的动力学酰化反应和非对映
乙酸酯在
水介质中的动力学脱酰化反应,获得了非对映纯的反式和顺式-4-
叔丁基环己烷甲醇。在有机和
水介质中,反式异构体优先发生反应,生成反式
乙酸酯,在有机介质中酰化时回收顺式醇,在
水介质中脱酰化时生成反式醇,回收顺式
乙酸酯。