Tetrahedron letters

1, 4-Dianion of acetophenone n-ethoxycarbonylhydrazone as a synthetic intermediate

N Matsumura, A Kunugihara, S Yoneda

文献索引：Matsumura, Noboru; Kunugihara, Akira; Yoneda, Shigeo Tetrahedron Letters, 1983 , vol. 24, # 31 p. 3239 - 3242

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被引用次数: 22

摘要

Abstract Various β-hydroxyketones and α, β-unsaturated ketones were prepared by the reaction of aldehydes and ketones with 1, 4-dianion (2) which is derived from acetophenone N-ethoxycarbonylhydrazone (1) with butyllithium. In the reaction of 2 with carbonyl compounds such as ester, amide, acid anhydride, acyl chloride, and alkyl carbonate, pyrazole derivatives were obtained in good yields.