The reaction of trichlorosilane (1a) at 250° C with cycloalkenes, such as cyclopentene (2a), cyclohexene (2b), cycloheptene (2c), and cyclooctene (2d), gave cycloalkyltrichlorosilanes [CnH2n− 1SiCl3: n= 5 (3a), 6 (3b), 7 (3c), 8 (3d)] within 6h in excellent yields (97–98%), but the similar reactions using methyldichlorosilane (1b) instead of 1a required a longer reaction time of 40h and afforded cycloalkyl (methyl) dichlorosilanes [CnH2n− 1SiMeCl2: n= 5 (3e), ...
