iridium complexes derived from chiral N,P ligands as catalysts for the asymmetric hydrogenation of vinylsilanes, a transformation for which generally applicable catalysts were lacking. Several catalysts emerged from this study that enabled the highly enantioselective hydrogenation of a wide range of vinylsilanes with trisubstituted or disubstituted terminal C=C bonds bearing aryl, alkyl, ethoxycarbonyl,
我们已经筛选出了各种各样的手性N,P
配体衍生的
铱配合物,作为
乙烯基硅烷不对称氢化的催化剂,这种转化方法缺乏通常适用的催化剂。从这项研究中出现了几种催化剂,它们能够对带有芳基,烷基,乙氧羰基或羟甲基取代基的三取代或二取代的末端C = C键的
乙烯基硅烷进行高度对映选择性氢化。除三甲基甲
硅烷基和二甲基(苯基)甲
硅烷基衍
生物外,三烷氧基甲
硅烷基和
硅杂
环丁基取代的烯烃也用作底物。