Carborane organic silicon monomer and method for preparing same

一种碳硼烷有机硅单体及其制备方法

Abstract

本发明公开了一种碳硼烷有机硅单体及其制备方法。以芳烃基二氯硅烷为起始原料,与乙炔基溴化镁进行格氏试剂置换反应,生成的芳烃基二乙炔基硅烷与癸硼烷发生加成闭笼反应,得到的芳烃基硅甲撑双碳硼烷与二甲基氯硅烷反应进行硅烷化,得到1,1′‑烃基硅甲撑‑2,2′‑双(二甲基硅基)双碳硼烷,再通过氯化反应,将两端硅氢键氯化,制备得到产物1,1′‑烃基硅甲撑‑2,2′‑双(二甲基氯硅甲基)双碳硼烷,即为碳硼烷有机氯硅烷单体。本发明提供的单体中由于引入了苯基和双碳硼烷基,可用于制备耐热和耐热氧化性能优异的耐高温聚合物。单体制备工艺简便、反应条件温和,且原材料易得,适合工业化生产。
The invention discloses a carborane organic silicon monomer and a method for preparing the same. The method includes carrying out Grignard reagent displacement reaction on aromatic dichlorosilane and ethynylmagnesium bromide to obtain aromatic diacetylene silane; carrying out addition cage reaction on the aromatic diacetylene silane and decaborane to obtain aromatic silicon methylene twin-carbon borane; carrying out reaction on the aromatic silicon methylene twin-carbon borane and dimethylchlorosilane to carry out silylation so as to obtain 1, 1'-silicon alkyl methylene-2, 2'-bis-(dimethylsilane) twin-carbon borane; chlorinating two end silicon-hydrogen bonds by means of chlorination reaction to obtain a product 1, 1'-silicon alkyl methylene-2, 2'-bis-(dimethyl chlorine silicon methyl) twin-carbon borane, namely, a carborane organic chlorosilane monomer. The aromatic dichlorosilane is used as a starting raw material. The carborane organic silicon monomer and the method have the advantages that phenyl and twin-carbon borane are introduced into the carborane organic silicon monomer, and accordingly the carborane organic silicon monomer can be used for preparing high-temperature-resistant polymers with excellent heat resistance and heat oxidation resistance; processes for preparing the carborane organic silicon monomer are simple and convenient, reaction conditions are mild, raw materials for the carborane organic silicon monomer are easily available, and accordingly the carborane organic silicon monomer and the method are suitable for industrial production.

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