In a method of synthesis of 1-substituted azacycloalkan-2-ones with primary alkyl halides and aralkyl halides as alkylating agents, the improvement comprising carrying out the N-alkylation in the presence of a phase transfer catalyst having the structural formula
where X is a suitable anion; and R1, R2, R3 and R4 are each alkyl or aralkyl groups having 1 - 18 carbon atoms, or R2, R3 and R4 can form part of a heterocyclic ring, with the proviso that the combined total of carbon atoms is between 16 and 40.
在一种以伯烷基卤化物和芳烷基卤化物为烷基化剂合成 1-取代
氮杂环烷-2-
酮的方法中,该改进包括在结构式如下的相转移
催化剂存在下进行 N-烷基化反应
其中 X 为合适的阴离子;R1、R2、R3 和 R4 各为具有 1-18 个
碳原子的烷基或芳烷基,或 R2、R3 和 R4 可构成杂环的一部分,但
碳原子的总和在 16 至 40 之间。