Reaction of α-chloroketones with 1,4-dianion of acetophenone n-ethoxy-carbonylhydrazone
作者:Noboru Matsumura、Akira Kunugihara、Shigeo Yoneda
DOI:10.1016/s0040-4039(01)81485-4
日期:1984.1
1,4-Dianion of acetophenone N-ethoxycarbonylhydrazone (2) reacts with α-chloroketones such as phenacyl chloride, 1-chloroacetone, 3-chloro-2-butanone, and 1,3-dichloroacetone to give pyrazoline derivatives in good yields. In the reactions of 2-chlorocyclohexanone and 3-chloro-2-norbornanone with 2, cis-chlorohydrin and exo-chlorohydrin were selectively obtained, respectively.
苯乙酮的1,4-二价阴离子N-乙氧基羰基zone(2)与苯甲酰氯,1-氯丙酮,3-氯-2-丁酮和1,3-二氯丙酮等α-氯酮反应生成吡唑啉衍生物,收率很高。在2-氯环己酮和3-氯-2-降冰片烷酮与2的反应中,分别选择性地得到顺氯醇和外氯醇。