초록 |
1,3-Cyclohexadiene undergoes the hydrosilylation reaction with hydrochlorosilanes to give (chlorosilyl)cycloalkenes and bis(chlorosilyl)cycloalkanes. Generally 1,3-cyclohexadiene reacted with a variety of hydrochlorosilanes RHSiCl2 (R= Cl, H, Me, i-Pr, Ph, c-pentyl) at temperatures ranging from room temperature to 80 oC in the presence of group 10 metal (Ni, Pd, Pt) complex to afford 3-(chlorosilyl)cyclohexenes in good yields. Interestingly, the thermal hydrosilylation of 3-(chlorosilyl)cyclohexenes with the hydrochlorosilanes occurred effectively at the high temperature of 300-320 oC to give bis(chlorosilyl)cycloalkanes as major products. The reactivity of RHSiCl2 decreases as the bulkiness of R-substituent on the silicon increases. In this presentation we will discuss the results in details. |