Hexa(organylsilsesquioxanes)

Аннотация

A method for the synthesis of earlier practically unknown hexa(organylsilsesquioxanes) (RSiO_1,5)₆ have been developed based on the reaction of organyltrichlorosilanes RSiCl₃ (R = Et, Vin) with DMSO. The reaction proceeded in several steps. The initial stage of the reaction gave poorly available 1,3,5-trichloro-1,3,5-triorganylcyclosiloxanes in 40—80% yield, as well as organyl(chloro)oligohomosilsesquioxanes, which further are converted to the corresponding organyloligosilsesquioxanes. Based on the monitoring of the reaction mixture by GC-MS, a scheme for the formation of the intermediate silsesquioxane structures have been suggested.