The 1,4-insertion reactions of 1,1-bis(perhalogenomethyl)-2,2-dicyanoethylenes to produce ketenimines

Abstract

The two olefins (CF₃)₂CC(CN)₂ and (CF₃)(CF₂Cl) CC(CN)₂ undergo reaction with a wide variety of organometallic compounds by a 1,4-addition. The products are ketenimines, and in this way a good range of ketenimino-derivatives of silicon, germanium, tin, and boron have been synthesised. The spectral properties and chemical reactions of these metal and metalloid ketenimines are reported.