Dehydrochlorination to Silylenes by N-Heterocyclic Carbenes CuiHaiyan ShaoYanjun LiXiaofei KongLingbing CuiChunming 2009 Reaction of cyclic diaminochlorosilanes with 1,3-bis(<i>tert</i>-butyl)imidazol-2-ylidene resulted in the facile formation of the corresponding stable and transient diaminosilylenes. This novel dehydrochlorination route could be applied for the generation of four- and five-membered N-heterocyclic silylenes with a range of different substituents under very mild conditions. Activation of an olefinic C−H bond and reduction of a cyclic diaminochlorosilane have been observed for these new transient silylenes.