This paper reports the synthesis, structure, and properties of a series of PNP pincer complexes of osmium OsH3Cl[HN(C2H4PiPr2)2] (1), OsH3[N(C2H4PiPr2)2] (2), OsH4[HN(C2H4PiPr2)2] (3), and OsH2(PMe3)[HN(C2H4PiPr2)2] (4). The tetrahydride 3 operates as an efficient catalyst at 0.1 mol% loading for the reactions of amination and dehydrogenative coupling of primary alcohols, producing secondary amines and symmetrical esters, respectively. The catalyst 3 is distinguished by outstanding stability, and it can be used in an aqueous environment at temperatures as high as 200 °C.
本文报道了一系列
锇PNP钳形配合物的合成、结构和性质,包括OsH3Cl[HN(C2H4PiPr2)2] (1)、OsH3[N(C2H4PiPr2)2] (2)、OsH4[HN(C2H4PiPr2)2] (3)和OsH2(PMe3)[HN(C2H4PiPr2)2] (4)。四
氢化物3在0.1 mol%的负载下作为高效催化剂,用于伯醇的
氨化和脱氢偶联反应,分别生成仲胺和对称酯。催化剂3以其出色的稳定性而著称,并且可以在高达200 °C的
水相环境中使用。