申请人:KAO CORPORATION
公开号:EP1634571A1
公开(公告)日:2006-03-15
There is provided a noble process for producing a salicylic ester for perfumes which comprises the step of transesterifying a salicylic lower alkyl ester with an alcohol having at least one carbon atom which is located adjacent to a hydroxyl-bonded carbon atom and has one or more hydrogen atoms bonded thereto, in the presence of a tin-based catalyst. The process of the present invention enables the salicylic ester to be produced at a high yield and is free from handling problems such as precipitation of solids in a distillation residue obtained after the reaction, and the catalyst used therein is reusable.
本发明提供了一种生产用于香水的水杨酸酯的高贵工艺,该工艺包括以下步骤:在锡基催化剂存在下,将水杨酸低级烷基酯与具有至少一个碳原子的醇进行酯交换反应,该碳原子位于与羟基键合的碳原子相邻的位置,并有一个或多个氢原子与之键合。本发明的工艺能够以较高的产率生产水杨酸酯,而且没有处理问题,如反应后蒸馏残渣中的固体沉淀,其中使用的催化剂可重复使用。