The Reaction of Various Substituted γ-Lactones with Vinylmagnesium Chloride

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  • 種々の置換γ‐ラクトンとビニルマグネシウムクロリドの反応
  • シュジュ ノ チカンガンマ ラクトン ト ビニル マグネシウム クロリド ノ

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The reaction of various γ-lactones with vinylmagnesium chloride was carried out. From 2, 2, 4-trimethyl-γ-butyrolactone (1), a mixture of 8-hydroxy-6, 6-dimethyl-1-nonen-5-one (2) (yield, 42.5%) and 4, 4-dimethylyl-5-vinyl-6-heptene-2, 5-diol (3) (yield, 18.8%) was obtained. However, in the presence of copper (I) chloride, the yield of (3) was supressed and 8-hydroxy-6, 6-dimethyl-1-nonen-5-one (2) (yield, 42%) was obtained almost exclusively.

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