Tetrahedron Letters

A convenient synthesis of substituted γ-pyrones

M Koreeda, H Akagi

文献索引：Koreeda, Masato; Akagi, Hiroshi Tetrahedron Letters, 1980 , vol. 21, p. 1197 - 1200

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被引用次数: 38

摘要

Abstract An efficient and general synthetic method for various 2-mono-and 2, 6-disubstituted γ-pyrones has been developed. This utilizes the C-acylation (70–85%) of β-methoxy-α, β- enone lithium enolates 4 by acid chlorides 3 followed by the acid-catalyzed cyclization (> 80%) of the resulting enols 5 to γ-pyrones 6.