From the reaction of electron-rich olefins, bis(1,3-dimethylbenzimidaz
olidine-2-ylidene), I, or bis(3-methylbenzothiazolidine-2-ylidene), LI
with proton active compounds, such as dimethyl phosphite, diethyl pho
sphite, acetonitrile and benzaldehyde were obtained 2-substituted benz
imidazole or benzothiazole derivatives. The compounds synthesized were
identified by H-1, C-13, P-31-NMR, mass, FT-LR spectroscopic techniqu
es and micro analysis.