Tetrahedron letters

Claisen rearrangement of aryl propargyl ethers in poly (ethylene glycol)-a remarkable substituent and solvent effect

U Roa, KK Balasubramanian

Index: Rao, Usha; Balasubramanian, K. K. Tetrahedron Letters, 1983 , vol. 24, # 45 p. 5023 - 5024

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Citation Number: 44

Abstract

Abstract The Claisen rearrangement of aryl propargyl ethers in poly (ethylene glycol)-200 at 200 C affords products in good yields. Aryl propargyl ethers containing electron donating groups yield (2H)-benzopyrans and those containing electron withdrawing groups yield 2- methylbenzofurans.