Carbon–tin bonds in alkynyl-, allyl-, acyl-, alkenyl-, and arylstannanes were found to add to carbon–carbon unsaturated bonds of alkynes, 1,3-dienes and 1,2-dienes in the presence of a catalytic amount of palladium or nickel complexes to give alkenyl- or allylstannanes having various functional groups. Mechanisms are proposed that start with oxidative addition of a carbon–tin bond, or palladacycle formation followed by β-tin elimination or by the reaction with an organostannane.
研究发现,在催化量存在下,炔基、烯丙基、酰基、烯基和芳基
锡烷中的碳-
锡键可以加成到
炔烃、1,3-二烯和1,2-二烯的碳-碳不饱和键上。
钯或
镍络合物的合成得到具有各种官能团的烯基-或烯丙基
锡烷。提出的机制是从碳-
锡键的氧化加成开始,或形成环
钯,然后消除β-
锡或与
有机锡烷反应。