Electrophilic addition of SCl2, SeCl2 and SeCl4 to 2 equivalents of allyl trimethyl silane proceeds regioselectively to give bis [2-chloro-3-(trimethylsilyl) propyl] sulfide, selenide and selenium dichloride, respectively. The reaction with TeCl4 affords only diallyl tellurium dichloride. The structures of the compounds were confirmed by 1H, 13C, 77Se and 125Te NMR techniques.
[Furuta, Kyoji; Ikeda, Yoshihiko; Meguriya, Noriyuki; Ikeda, Nobuo; Yamamoto, Hisashi Bulletin of the Chemical Society of Japan, 1984 , vol. 57, # 10 p. 2781 - 2790]