Reaction of α-chloroketones with 1,4-dianion of acetophenone n-ethoxy-carbonylhydrazone |
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| Authors: | Noboru Matsumura Akira Kunugihara Shigeo Yoneda |
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| Institution: | Department of Applied Chemistry, University of Osaka Prefecture, Sakai, Osaka 591, Japan |
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| Abstract: | 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. |
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