Iodine/Et3SiH: a novel reagent system for the synthesis of 3-aryl-1H-indenes from 1,3-diaryl propargyl alcohols
作者:B.V. Subba Reddy、B. Brahma Reddy、K.V. Raghavendra Rao、J.S. Yadav
DOI:10.1016/j.tetlet.2010.08.061
日期:2010.10
1,3-Diaryl propargyl alcohols undergo smooth intramolecular Friedel-Crafts cyclization with triethylsilane in the presence of 10 mol % iodine 3-aryl-1H-indene derivatives in good yields in short reaction times. This is the first example on the synthesis of substituted indenes from 1,3-diaryl propargyl alcohols. The use of inexpensive and readily available molecular iodine makes this method quite simple, more convenient, and practical. (C) 2010 Elsevier Ltd. All rights reserved.