42788-17-0Relevant articles and documents
In(OTf)3-catalyzed highly chemo- and regioselective head-to-tail heterodimerization of vinylarenes with 1,1-diarylethenes
Dai, Jing,Wu, Jinlong,Zhao, Guanglian,Dai, Wei-Min
supporting information; experimental part, p. 8290 - 8293 (2011/08/10)
Cross combination: The olefinic C-H bond in 1,1-diarylethenes selectively adds to the C=C 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 intermediate. Copyright