Phosphine-free cobalt pincer complex catalyzed <i>Z</i>-selective semi-hydrogenation of unbiased alkynes
作者:Vinod G. Landge、Jayaraman Pitchaimani、Siba P. Midya、Murugan Subaramanian、Vedichi Madhu、Ekambaram Balaraman
DOI:10.1039/c7cy01994g
日期:——
Herein, we report a novel, molecularly defined NNN-type cobalt pincer complexcatalyzed transfer semi-hydrogenation of unbiased alkynes to Z-selective alkenes. This unified process is highly stereo- and chemo-selective and exhibits a broad scope as well as wide functional group tolerance. Ammonia-borane (AB), a bench-stable substrate with high gravimetric hydrogen capacity, was used as a safe and practical
Palladium-catalyzed arylations of styrene and acrylic acid are shown to occur in the presence of base (Na2CO3 or K2CO3) in pure water using simple palladium compounds as catalyst precursors.