In(OTf)3-Catalyzed Highly Chemo- and Regioselective Head-to-Tail Heterodimerization of Vinylarenes with 1,1-Diarylethenes
作者:Jing Dai、Jinlong Wu、Guanglian Zhao、Wei-Min Dai
DOI:10.1002/chem.201101190
日期:2011.7.18
olefinic CH bond in 1,1‐diarylethenes selectively adds to the CC double bond of substituted styrenes in a head‐to‐tail fashion under In(OTf)3 (OTf=triflate) catalysis (see scheme) while homo‐ and cyclodimerization reactions are suppressed. The high chemo‐ and regioselectivity of this intermolecular hydroalkenylation originates from the high stability and steric bulk of the diaryl‐substituted tertiary carbocation