Dehydrocondensation of trialkylsilanes with acetylene and monosubstituted acetylenes
作者:M.G. Voronkov、N.I. Ushakova、I.I. Tsykhanskaya、V.B. Pukhnarevich
DOI:10.1016/0022-328x(84)85131-1
日期:1984.3
Trialkylsilanes readily undergo dehydrocondensation with acetylene and substituted acetylenes in the presence of the catalytic systems, H2PtCl6/iodine, lithium iodide or /trialkyliodosilanes, and so the monosubstituted acetylenes HCCR (R = C4H9, C(CH3)3, CH2Cl, C6H5) smoothly afford the corresponding trialkyl(organylethynyl)silanes. In hexane or benzene the yield of the dehydrocondensation products
在催化体系,H 2 PtCl 6 /碘,碘化锂或/三烷基碘硅烷的存在下,三烷基硅烷很容易与乙炔和取代的乙炔进行脱氢缩合反应,因此单取代的乙炔HCCR(R = C 4 H 9,C(CH 3)3,CH 2 Cl,C 6 H 5)平稳地得到相应的三烷基(有机基乙炔基)硅烷。在己烷或苯中,脱氢缩合产物的产率为90%。三乙基硅烷与乙炔的脱氢产物为双(三乙基磺酰基)乙炔和1,2-双(三乙基甲硅烷基)乙烷。讨论了反应机理。