Hydroarylation of aryl-substituted alkynes with simple and substituted arenes was conducted in the presence of trifluoroacetic acid in dichloromethane without any metal catalysts or additives. Electron-rich arenes coupled with aryl-substituted alkynes to give 1,1-diarylalkenes in good to high yields.
A highly regioselective Cu-exchanged tungstophosphoric acid catalyst for hydroarylation and hydroamination of alkynes
作者:Nayeem Pasha、N. Seshu Babu、K.T. Venkateswara Rao、P.S. Sai Prasad、N. Lingaiah
DOI:10.1016/j.tetlet.2008.10.131
日期:2009.1
An efficient and reusable Cu-exchanged tungstophosphoric acid catalyst is demonstrated for the solvent free hydroarylation and hydroamination reactions of alkynes with numerous arene and amine derivatives, respectively. The catalyst exhibited exceptionally high activity and regioselectivity in both the reactions.
FeCl<sub>3</sub>-Catalyzed Alkenylation of Simple Arenes with Aryl-Substituted Alkynes
作者:Ruoshi Li、Sunewang R. Wang、Wenjun Lu
DOI:10.1021/ol070737u
日期:2007.5.1
An addition of electron-rich arenes to aryl-substituted alkynes to form 1,1-diaryl alkenes is carried out in the presence of FeCl3 as catalyst under mild conditions.