A new preparation of diorganozincs from olefins via a nickel catalyzed hydrozincation
作者:Stephan Vettel、Andrea Vaupel、Paul Knochel
DOI:10.1016/0040-4039(94)02438-h
日期:1995.2
The reaction of olefins with diethylzinc in the presence of catalytic amounts of Ni(acac)2 provides dialkylzincs (neat, 40–50 °C, 2–6 h). These zinc reagents can be trapped by various electrophiles or used for the catalyticasymmetricaddition to aldehydes (> 85 % ee). Allylic and homoallylic alcohols are especially good substrates for the reaction.