甲基苯基聚硅烷的合成及氯甲基化  

Synthesis of Polymethylphenylsilane and Its Chloromethylation

作　　者：阮军[1] 李志芳[2] 李美江[2] 来国桥[2] 沈永嘉[1] 

机构地区：[1]华东理工大学精细化工研究所,上海200237 [2]杭州师范大学有机硅化学及材料技术教育部重点实验室,杭州310012

出　　处：《华东理工大学学报（自然科学版）》2009年第5期718-722,共5页Journal of East China University of Science and Technology

基　　金：国家自然科学基金(20676036)

摘　　要：以甲基苯基二氯硅烷为原料,使用Wurtz偶联法和低价钛试剂法合成了甲基苯基聚硅烷。低价钛试剂法可以得到产率较高的、分子量分布较窄的甲基苯基聚硅烷(Mn=16 860,分散系数Mw/Mn=1.6)。在氯仿中以四氯化锡为催化剂,甲基苯基聚硅烷与甲基氯甲基醚反应得到氯甲基苯基甲基聚硅烷,Mn=5 630,只有前者的1/3,且反应收率只有12%。Polymethylphenylsilanes were synthesized from methylphenyl dichloroorganosilane by using two different kinds of methods, Wurtz-eoupling and the low-valent titanium reagent. The results showed that using the low-valent titanium reagent could get polymethylphenylsilanes with narrow molecular weight distribution （Mn = 16 860, Mw/Mn = 1. 6）. The polymethylphenylsilanes could react with chloromethyl methyl ether in chloroform in the presence of SnCl4 to get chloromethylphenyl methyl silanes, but its mean molecular weight was reduced to Mn=5 630 and the reaction yield was only 12%.

关 键 词：甲基苯基 聚硅烷 氯甲基化 Wurtz偶联法 低价钛试剂 

分 类 号：O627.41[理学—有机化学]