Synthese nouvelle d'alcynes α-silicies

In the presence of catalytic amounts of copper(I) chloride, and at 150° in an autoclave methylchlorosilanes Me4 SiCl4-n (n = 1,2,3) react with terminal alkynes RCCH (R = n-Bu, Ph) leading to the corresponding alkynylmethyl-chlorosilanes, RCCSiMe4 Cl3-n, in good yields.