Iridium- and Rhodium-Catalyzed Dehydrogenative Silylations of C(sp<sup>3</sup>)H Bonds Adjacent to a Nitrogen Atom Using Hydrosilanes
作者:Tsuyoshi Mita、Kenichi Michigami、Yoshihiro Sato
DOI:10.1002/asia.201300930
日期:2013.12
silylated: In the presence of iridium or rhodium catalysts, C(sp3)H bonds adjacent to a nitrogen atom were silylated by the aid of a pyridine‐directing group. In iridium catalysis, a hydrogen‐trapping reagent such as norbornene or tert‐butylethylene, which is usually required in late transition‐metal‐catalyzed dehydrogenative coupling reactions, was not required. In rhodium catalysis, however, 1 equivalent
现在这只是甲硅烷基化的:在铱或铑催化剂的存在下,借助吡啶导向基团,与氮原子相邻的C(sp 3)H键被甲硅烷基化。在铱催化中,不需要在后期过渡金属催化的脱氢偶联反应中通常需要的捕集氢的试剂,如降冰片烯或叔丁基乙烯。但是,在铑催化中,需要1当量的COD(1,5-环辛二烯)才能诱导更高的转化率。