The synthesis of chlorosilanes from alkoxysilanes, silanols, and hydrosilanes with bulky substituents
The synthesis of chlorosilanes from alkoxysilanes, silanols, and hydrosilanes with bulky substituents
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DOI：
10.1016/j.jorganchem.2005.08.028
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发表时间：
2006-01-01
影响因子：
2.3
通讯作者：
Ishikawa, M
中科院分区：
文献类型：
--
作者：
Masaoka, S;Banno, T;Ishikawa, M
我们已经发现，商业上重要的三烷基氯硅烷可以容易地通过烷氧基硅烷、硅烷醇和氢硅烷与浓盐酸水溶液的反应来合成。用35%的盐酸水溶液处理带有大体积烷基取代基如i-Pr、sec-Bu、tort-Bu和cyclo-Hex基团的三烷基烷氧基硅烷，以优异的产率得到相应的三烷基氯硅烷。用35%盐酸水溶液类似地处理三烷基硅烷醇也以几乎定量的产率得到三烷基氯硅烷。甲基三氯硅烷和二甲基二氯硅烷与带有大体积烷基的烷基-格氏试剂反应，然后用浓盐酸水溶液处理所得混合物，以高产率产生相应的二烷基甲基-和烷基二甲基氯硅烷。在钯催化剂的存在下，用浓盐酸处理三烷基氢硅烷，以高产率得到三烷基氯硅烷。(c)2005 Elsevier B. V.保留所有权利。
We have found that commercially important trialkylchlorosilanes can readily be synthesized by the reaction of alkoxysilanes, silanols, and hydrosilanes with aqueous concentrated hydorochloric acid. Treatment of trialkylalkoxysilanes bearing the bulky alkyl substituents, such as the i-Pr, sec-Bu, tort-Bu, and cyclo-Hex group, with 35% aqueous hydrochloric acid afforded the corresponding trialkylchlorosilanes in excellent yields. Similar treatment of trialkylsilanols with 35% aqueous hydrochloric acid also gave trialkylchlorosilanes in almost quantitative yields. The reaction of methyltrichlorosilane and dimethyldichlorosilane with alkyl-Grignard reagents bearing a bulky alkyl group, followed by treatment of the resulting mixtures with aqueous concentrated hydrochloric acid, produced the respective dialkylmethyl- and alkyldimethylchlorosilanes in high yields. Treatment of trialkylhydrosilanes with concentrated hydrochloric acid in the presence of a palladium catalyst afforded trialkylchlorosilanes in high yields. (c) 2005 Elsevier B.V. All rights reserved.