Tetrahedron Letters p. 3239 - 3242 (1983)
Update date:2022-08-04
Topics:
Matsumura, Noboru
Kunugihara, Akira
Yoneda, Shigeo
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.
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