申请人:Takeda Chemical Industries, Ltd.
公开号:US04593115A1
公开(公告)日:1986-06-03
An 1-Iodoalkyl acylate, which is useful as the raw material for esterification of cephalosporins, penicillins, etc. is prepared in a high degree of purity and in high yield by (1) allowing a carboxylic acid iodide to react with an aldehyde, or (2) allowing a carboxylic acid chloride to react with a salt of hydriodic acid and then allowing the resulting product to react with an aldehyde, or (3) by simultaneously allowing a carboxylic acid chloride, a salt of hydriodic acid and an aldehyde to react with one another.
一种1-碘烷基酰酸酯,可用作头孢菌素、青霉素等酯化反应的原料,通过以下方式制备:(1)使羧酸碘化物与醛反应,或(2)使羧酸氯化物与碘化氢盐反应,然后使生成的产物与醛反应,或(3)同时使羧酸氯化物、碘化氢盐和醛相互反应,以高纯度和高产率制备。