| 초록 |
The Si–C coupling reaction of polychloromethanes with trichlorosilane in the presence of organic salts (R4ECl: E = N, P) as catalyst give the bis-silylation compounds as major products. The reaction of polychloromethanes (RCH3-nCln: R= Cl, n = 1-3; R = Ph, n = 2, 3) with trichlorosioane in the presence of tetrabutylphosphonium chloride occur at the temperature raging 130 oC to 170 oC to give two type bis-silylation products, bis(trichlorosilyl)methanes and (dichlorosilyl)(trichlorosilyl)methanes as the major products along with monosilylation products, respectively. Higher chlorinated methanes such as chloroform and tetrachloromethane undergo both of reductive dechlorinative and Si-C coupling reactions to give bis-silylation compounds as major products. The reactivity of polychloromethanes decreases as the number of chlorine-substituents decreases. In this presentation we will discuss the results in details. |
