Preparation of 1,2-Dienes by the Palladium-Catalyzed Hydrogenolysis of 3-Methoxycarbonyloxy-1-alkynes with Ammonium Formate

Authors:
  • JTJiro Tsuji
    Jiro Tsuji
  • TSTeruo Sugiura
    Teruo Sugiura
  • IMIchiro Minami
    Ichiro Minami
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Abstract
A useful preparative method for 1,2-dienes from 3-methoxy-carbonyloxy-1-alkynes by the palladium-catalyzed hydrogenolysis with ammonium formate is described. 3-Methoxycarbonyloxy-1-alkynes are prepared by the addition of magnesium acetylide to ketones or aldehydes, followed by quenching with methyl chloroformate.