作者:Ikyon Kim、Sei-Hee Lee、Sunkyung Lee
DOI:10.1016/j.tetlet.2008.09.034
日期:2008.11
Lewis acidic nature of boron trichloride (BCl3) to coordinate to the carbonyl functionality was exploited for the synthesis of benzofurans via dehydrative cyclization. This mild and efficient procedure allowed for facile access to a number Of highly Substituted benzofurans in a regioselective manner. The Structural requirement for the successful cyclodehydration was examined in the cases, where competitive demethylation could occur. (C) 2008 Elsevier Ltd. All rights reserved.