格氏法合成二苯基二甲氧基硅烷  

Grignard Synthesis of Diphenyl Dimethoxy Silane

作　　者：陈发德[1] 辛小乐 姜振华 

机构地区：[1]武汉工程大学研究设计院,武汉430073 [2]湖北恒鑫化工有限公司,湖北鄂州436070

出　　处：《有机硅材料》2014年第2期84-86,共3页Silicone Material

摘　　要：以四甲氧基硅烷、氯苯、溴苯、镁粉为原料,在四氢呋喃与甲苯组成的混合溶液中进行格氏反应,得到二苯基二甲氧基硅烷。研究了反应溶剂种类及其配比、氯苯与溴苯的配比对产品收率的影响。结果表明,较佳反应条件为,甲苯与四氢呋喃的质量比为4∶1,氯苯与溴苯的量之比为95∶5,此时得到的产品收率84%,纯度98%,氯的质量分数小于10×10-6,未检出多氯联苯。Diphenyl dimethoxy silane was prepared with tetramethoxysilane, chlorobenzene, bromo- benzene, and magnesium as the raw materials, in mixed solution of THF and toluene by Grignard reaction. The effect of kinds and the ratio of the solvents, the ratio of chlorobenzene and bromobenzene on the product yield was studied. Results show that when the mass ratio of toluene to tetrahydrofuran was 4： 1, ratio of chloro- benzene and bromobenzene was 95： 5, the obtained product was with yield of 84% and purity of 98 % , and the mass fraction of chlorine was less than 10 x 10-6. No PCBs were detected.

关 键 词：四甲氧基硅烷 二苯基二甲氧基硅烷 格氏反应 氯苯 溴苯 镁 

分 类 号：O627.41[理学—有机化学]