We report a highlyselective synthesis of siloxane building blocks containing SiH2or SiH functionalities. AuCl(PPh3)/PPh3 or AuCl(PPh3)/PnBu3 system catalyzed the reaction of trihydrosilanes with silanols giving SiH2-containing siloxanes exclusively. On the other hand, a highlyselectivereaction of dihydrosilanes with silanols to afford SiH-containing siloxanes was achieved by simply changing the
我们报告了含有SiH 2或SiH官能团的硅氧烷构建基的高度选择性合成。AuCl(PPh 3)/ PPh 3或AuCl(PPh 3)/ P n Bu 3体系催化三氢硅烷与硅烷醇的反应,仅得到含SiH 2的硅氧烷。另一方面,通过简单地将膦配体改变为双齿的黄磷,实现了二氢硅烷与硅烷醇的高度选择性反应以提供含SiH的硅氧烷。的有用性的SiH 2含硅氧烷用三硅氧烷等的合成证明3具有SiH功能的SiOSi(Ph)(H)OSi t BuMe 2和五硅氧烷Ph 2 Si(OSiHPhOSiEt 3)2。