参考标题:Lewis Acid-Mediated Reactions Of 1-Cyclopropyl-2-Arylethanone Derivatives With Allenic Ester, Ethyl Acetoacetate, And Methyl Acrylate 作者:Min Shi,Xiang-Ying Tang,Yong-Hua Yang |发布日期:2008.7.1 摘要: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-2H-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