【摘要】 以邻二甲苯为原料，经五步反应合成了四甲基［双（３，４二甲酸酐苯基）］二硅氧烷（Ⅴ）．（Ⅴ）与八甲基环四硅氧烷平衡，得到含数个硅氧链段的芳香二酐．各反应产物的光谱数据与其结构一致更多还原

【Abstract】 Starting from 4 bromo o xylene,1,3 bis(3,4 dicarboxyphenyl) 1,1,3,3 tetramethyldisiloxane dianhydride(Ⅴ) was synthesized.(Ⅴ) was equilibrated with octamethylcyclotetrasiloxane used sulfuric acid as a catalyst,aromatic dianhydride containing siloxane was obtained.更多还原