Catalytic Carboxylationusing Carbon Dioxide

硅基铜在炔上的同步加成得到硅基烯基铜中间体。然后，二氧化碳的插入提供了相应的羧酸铜。因此，在常压二氧化碳下，利用硅硼烷作为硅源，实现了炔的第一次硅羧化反应，选择性地获得了高产率的硅内酯。

Syn addition of silyl copper species to an alkyne affords a silyl alkenyl copper intermediate. Then, insertion of carbon dioxide provides the corresponding copper carboxylate species. Thus, the first catalytic silacarboxylation of an alkyne has been achieved by utilizing silylborane as the silicon source under atmospheric pressure of carbon dioxide to afford the silalactone selectively in high yield.