Tetrahedron Letters p. 4529 - 4532 (1984)
Update date:2022-08-03
Topics:
Matsumura, Noburu
Kunugihara, Akira
Yoneda, Shigeo
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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