The synthesis of chlorosilanes from alkoxysilanes, silanols, and hydrosilanes with bulky substituents
作者:Shin Masaoka、Tadashi Banno、Mitsuo Ishikawa
DOI:10.1016/j.jorganchem.2005.08.028
日期:2006.1
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, tert-Bu, and cyclo-Hex group, with 35% aqueous hydrochloric acid afforded the corresponding trialkylchlorosilanes in excellent yields. Similar treatment of trialkylsilanols
我们已经发现,商业上重要的三烷基氯硅烷可以通过烷氧基硅烷,硅烷醇和氢硅烷与浓盐酸水溶液的反应而容易地合成。带有庞大的烷基取代基的三烷基烷氧基硅烷的处理,例如i -Pr,仲-Bu,叔-Bu和环用35%盐酸水溶液的-Hex基团以优异的产率得到相应的三烷基氯硅烷。用35%的盐酸水溶液对三烷基硅烷醇进行类似的处理也以几乎定量的产率得到了三烷基氯硅烷。甲基三氯硅烷和二甲基二氯硅烷与带有庞大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,以高收率生产了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,可以高收率得到三烷基氯硅烷。