Copper-catalyzed hydrostannation of activated alkynes.
[reactions: see text] [(Ph3P)CuH]6 effectively catalyzes the hydrostannation of activated alkynes with exclusive regioselectivity for alpha-stannation. Syn hydrostannation is observed exclusively for alkynoates. Anti or syn hydrostannation adducts are obtained as products for alkynone substrates.
Leung
Lai To
LT
Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China.
Leung
Sze Kar
SK
Chiu
Pauline
P