The Journal of organic chemistry

Lewis acid-mediated reactions of 1-cyclopropyl-2-arylethanone derivatives with allenic ester, ethyl acetoacetate, and methyl acrylate

M Shi, XY Tang, YH Yang

Index: Shi, Min; Tang, Xiang-Ying; Yang, Yong-Hua Journal of Organic Chemistry, 2008 , vol. 73, # 14 p. 5311 - 5318

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Citation Number: 17

Abstract

TMSOTf-mediated reactions of 2-aryl-1-(1-phenylcyclopropyl) ethanones 1 with allenic esters afford a novel method for the synthesis of 6-methyl-3a, 7-diaryl-3, 3a-dihydro-2 H- benzofuran-4-one derivatives 2 in moderate yields. In addition, we also found that TMSOTf- mediated reactions of 1-cyclopropyl-2-arylethanones with ethyl acetoacetate can provide the corresponding 2, 3-dihydrobenzofuran-4-ol and dihydrofuro [2, 3-h] chromen-2-one in ...

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