Rhodium-catalysed cyclic carbonylation of 2-alkynylphenols: synthesis of benzofuranones and coumarins

…, T Sugioka, K Hirao, SW Zhang, S Takahashi

Index: Yoneda, Eiji; Sugioka, Takashi; Hirao, Kojiro; Zhahg, Shi-Wei; Takahashi, Shigetoshi Journal of the Chemical Society - Perkin Transactions 1, 1998 , # 3 p. 477 - 483

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Citation Number: 47

Abstract

Rhodium-catalysed carbonylation of 2-alkynylphenols 1 under water-gas shift reaction conditions gives benzofuranone derivatives 2 and coumarin derivatives 3 in high yield (up to 96%, 2∶ 3= 65∶ 35), in which the hydroxy group adjacent to the carbon–carbon triple bond participitates in the cyclic carbonylation.