New approach to the synthesis of linear and cyclic vinyl(alkoxy)siloxanes
作者:S. V. Basenko、A. A. Mailyan
DOI:10.1134/s1070363217060068
日期:2017.6
Main products of the reaction of vinyltrichlorosilane VinSiCl3 with DMSO in the medium of tetra-(alkoxy)silane are linearsiloxanes (RO)3Si[OSiVin(OR)]OSi(OR)3, RO[Vin(RO)SiO] n Si(OR)3 (R = Me, Et, n = 0–2) and the hitherto unknown cyclicsiloxanes [Vin(RO)SiO] m [(RO)2SiO]4–m (m = 1–3) formed in the ratio of 70: 30%. A tentative scheme of their formation is suggested with participation of the products
乙烯基三氯硅烷VinSiCl 3与DMSO在四(烷氧基)硅烷介质中反应的主要产物是线性硅氧烷(RO)3 Si [OSiVin(OR)] OSi(OR)3,RO [Vin(RO)SiO] n Si(OR)3(R = Me,Et,n = 0–2)和迄今未知的环状硅氧烷[Vin(RO)SiO] m [(RO)2 SiO] 4– m(m = 1–3)形成比例为70:30%。建议它们的形成的初步方案是在乙烯基(烷氧基)二氯-,乙烯基二(烷氧基)氯-,三烷氧基氯和二烷氧基二氯硅烷之间交换烷氧基。