A process for the preparation of a cyclohexane compound of the formula I.
wherein R represents a hydrogen atom or an alkyl group, an alkylthioalkyl group or an unsubstituted or substituted phenyl group; and R¹ represents an alkyl group, an unsubstituted or substituted benzyl group, a phenethyl group, a phenoxymethyl group, a 2-thienylmethyl group, an alkoxymethyl group or an alkylthiomethyl group; or a salt of said cyclohexane compound (I), which comprises the consecutive steps of cyclizing an acetonylsuccinic acid di-alkyl ester by reaction with a basic reagent ; reacting the resulting compound with an acyl chloride R¹-CO-Cl ; subjecting the resulting compound to a rearrangement reaction in the presence of a catalyst so as to obtain a compound of formula I ; and optionally converting said compound I into a salt thereof. Said process can be carried out in a single reaction vessel without isolation and purification of the intermediate compounds.
一种制备式 I 的
环己烷化合物的工艺。
其中 R 代表氢原子或烷基、烷
硫基或未取代或取代的苯基;R¹ 代表烷基、未取代或取代的苄基、苯乙基、苯氧甲基、2-
噻吩甲基、烷氧甲基或烷
硫甲基;或所述
环己烷化合物 (I) 的盐,包括以下连续步骤:通过与碱性试剂反应使乙酰
丁二酸二烷基酯环化;使所得化合物与酰基
氯 R¹-CO-Cl 反应;使所得化合物在催化剂存在下进行重排反应,以获得式 I 化合物;以及将所述化合物 I 转化为其盐。上述过程可在单个反应容器中进行,无需分离和纯化中间化合物。