Cobalt-catalyzed reductive coupling of activated alkenes with alkynes
HT Chang, TT Jayanth, CC Wang…
文献索引：Chang, Hong-Tai; Thiruvellore, Thatai Jayanth; Wang, Chun-Chih; Cheng, Chien-Hong Journal of the American Chemical Society, 2007 , vol. 129, # 39 p. 12032 - 12041
Cobalt complex/Zn systems effectively catalyze the reductive coupling of activated alkenes with alkynes in the presence of water to give substituted alkenes with very high regio-and stereoselectivity in excellent yields. While the intermolecular reaction of acrylates, acrylonitriles, and vinyl sulfones with alkynes takes place in the presence of CoI2 (PPh3) 2/Zn, the reaction of enones and enals with alkynes requires the use of the CoI2 (dppe)/Zn ...
