A highly stereospecific allylation of benzil by using (E)-and (Z)-allylic stannanes via photoinduced electron transfer
Abstract
Irradiation of benzil in acetonitrile in the presence of (E)- and (Z)-but-2-enyl-, pent-2-enyl-, and hex-2-enyl-tributylstannanes afforded the corresponding (E)- and (Z)-homcallylic alcohols, respectively, with complete retention of the original double bond configuration in good yields.