申请人:Yoshitomi Pharmaceutical Industries, Ltd.
公开号:EP0382863A1
公开(公告)日:1990-08-22
A process for the production of penicllic acid compounds, especially chloromethyl ester of penicillin G, penicillin V or sulbactam by esterification in the presence of a phase transfer catalyst of the general formula
(R¹)(R²)(R³) (R⁴)NX (III)
wherein R¹, R², R³ and R⁴ are the same or different and each is an alkyl or aralkyl group and X is a hydroxide, chloride, bromide or hydrogensulfate ion.
一种生产青霉素酸化合物,特别是青霉素G的氯甲基酯、青霉素V或舒巴坦的酯化工艺,其中在相转移催化剂的存在下进行酯化反应,该相转移催化剂的一般式为(R¹)(R²)(R³) (R⁴)NX (III),其中R¹、R²、R³和R⁴相同或不同,每个是烷基或芳基烷基,X为氢氧化物、氯离子、溴离子或氢硫酸根离子。