Palladium(0)-Catalysed Hydrostannylation of 1-Alkoxy-1-alkynes: A Synthesis of α-Alkoxyalkenylstannanes and Their Transmetallation to α-Alkoxyalkenyllithiums
作者:Sharon Casson、Philip Kocieński
DOI:10.1055/s-1993-26015
日期:——
1-Alkoxy-1-alkynes undergo rapid hydrostannylation with trialkylstannanes in the presence of catalytic amounts of palladium(0). The reaction gives clean cis-addition with the tin being placed preferentially in the α-position The resultant α-alkoxyalkenylstannanes transmetallate efficiently with BuLi to α-alkoxyalkenyllithiums which were previously accessible only with difficulty.