Benzofuran derivatives. I. On the effects of substituents in benzofuran syntheses.

T Suzuki, T Horaguchi, T Shimizu, T Abe

Index: Suzuki; Horaguchi; Shimizu; Abe Bulletin of the Chemical Society of Japan, 1983 , vol. 56, # 9 p. 2762 - 2767

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Citation Number: 22

Abstract

The Rössing's reaction of 4-substituted 2-acylphenoxyacetic acids give a mixture of benzofurans and 2-benzofurancarboxylic acids. The relative yields of benzofurans and 2- benzofurancarboxylic acids depend on the substituents on the benzene ring of the 2- acylphenoxyacetic acids. Electron-withdrawing substituents such as nitro groups favor the formation of 2-benzofurancarboxylic acids. On the other hand, the formation of ...