Abstract en] By the reaction of 1, 1-dichloro-1-silacyclobutane with mesitylmagnesium bromide and with t-butyllithium, we have synthesized 1-chloro-1-mesityl-1-silacyclobutane (II), 1, 1-dimesityl-1-silacyclobutane (III), 1-t-butyl-1-chloro-1-silacyclobutane (IV), 1, 1-di-t- butyl-1-silacyclobutane (V) and 1-t-butyl-1-mesityl-1-silacyclobutane (VI). 1 H NMR, IR and mass spectra of these compounds and of 1-chloro-1-phenyl-1-silacyclobutane (VII) and 1, ...
