Reactions of Chloromethylpolysiloxanes with Thiourea
作者:Shunichi Nozakura
DOI:10.1246/bcsj.28.299
日期:1955.4
was isolated an extensive fission and recombination of siloxane bonds took place in every case. Silicon-carbon bond in the thiuronium chloride derived from (I) was easily cleft by the treatment with an aqueous alkali to give three-dimensional methylpolysiloxane. In a similar manner the thiuronium chloride derived from (IV) gave silicic acid with aqueous alkali. The fission of silicon-carbon bonds in
氯甲基甲基聚硅氧烷 (I)、3-氯甲基七甲基三硅氧烷 (II) 3,5-二(氯甲基)八甲基四硅氧烷 (III) 和氯甲基聚硅氧烷 (IV) 在无水醇中与硫脲反应,得到含硅的氯化铥。尽管在 (II) 的情况下,相应的氯化钍被分离出来,但在每种情况下都会发生广泛的裂变和硅氧烷键的重组。衍生自(I)的氯化钆中的硅-碳键通过碱水溶液处理容易断裂,得到三维甲基聚硅氧烷。以类似的方式,衍生自(IV)的氯化铥在碱水溶液中得到硅酸。硅原子上的吸电子取代基促进了含硅钍盐中硅-碳键的裂变。
A chromato-mass spectrometric study of the disproportionation of organylfluorosiloxanes
作者:M. G. Voronkov、S. V. Basenko、V. Yu. Vitkovskii、I. A. Gebel'、R. G. Mirskov