Palladium-Catalyzed Direct C–H Silylation and Germanylation of Benzamides and Carboxamides
作者:Kyalo Stephen Kanyiva、Yoichiro Kuninobu、Motomu Kanai
DOI:10.1021/ol500519y
日期:2014.4.4
A palladium-catalyzed regioselective activation of C(sp2)–H and C(sp3)–H bonds of benzamides and carboxamides, followed by coupling with disilanes to afford organosilanes in moderate to high yields, with the aid of 8-aminoquinoline as a directing group, is reported. Catalytic C(sp2)–H germanylation of benzamides also proceeds under the same palladium catalysis. The reaction tolerates a wide variety
钯催化苯甲酰胺和羧酰胺的C(sp 2)–H和C(sp 3)–H键的区域选择性活化,然后与乙硅烷偶合,以中等至高收率获得有机硅烷,借助8-氨基喹啉作为报告了一个指导小组。在相同的钯催化下,苯甲酰胺的催化C(sp 2)–H锗烷基化也会进行。该反应可耐受各种官能团,并且可扩展而不降低产率。通过与肼的反应,伴随着酰基酰肼的产生,二齿导向基团易于除去和回收。