ChemInform Abstract: Efficient Hydroarylation and Hydroalkenylation of Vinylarenes by Broensted Acid Catalysis.

Broensted acid Tf2NH catalyzes Friedel-Crafts type head-to-tail hydroalkenylation and hydroarylation of vinylarenes [(I), (III), (V), and (VII)] under mild reaction conditions providing a readily scalable, metal-free, and practical access to bioactive trans-1,3-diaryl-1-butenes [(II), (IV), and (IX)] and cyclic analogues [(VI) and (VIII)] and 1,1-diarylalkanes (XI), resp., in high regioselectivity. [ABSTRACT FROM AUTHOR]