Synthesis of Bis(imino)aryl Iridium Pincer Complexes and Demonstration of Catalytic Hydrogen-Transfer Activity
作者:Sarah H. Oakley、Michael P. Coogan、Richard J. Arthur
DOI:10.1021/om070059f
日期:2007.4.1
Monomeric iridium(III) dihalide complexes containing terdentate bis(imino)aryl ligands, synthesized through oxidative addition of 2-bromoisophthalaldimines RNC(Br)NR (R = Ph 1, Mes 2, i-Pr 3, Me 4) to [IrCl(cod)]2 in the presence of NaBr to form [(RNCNR)IrBr2·solvent] (R = Ph 5, Mes 6, i-Pr 7, Me 8; solvent = MeCN; R = i-Pr 7a; DMSO), are reported. The development of a synthetic route to the complexes
含二齿亚氨基双(亚氨基)芳基配体的二铱铱(III)卤化物配合物,是通过将2-溴间苯二甲酰胺RNC(Br)NR(R = Ph 1,Mes 2,i- Pr 3,Me 4)氧化成[IrCl( cod)] 2在NaBr存在下形成[(RNCNR)IrBr 2 ·溶剂](R = Ph 5,Mes 6,i -Pr 7,Me 8 ;溶剂= MeCN; R = i- Pr 7a; DMSO)。概述了开发复合物的合成路线,并讨论了该系列中每个成员的全部特征。3和4的X射线结构在与金属中心配位后确认亚氨基的保留。对[(PhNCNPh)IrBr 2 ·MeCN](5)作为氢转移剂的催化活性的研究是通过在室温下酮(1,3-二苯丙酮和苯乙酮)经碱催化转移加氢成醇而进行的。承担。初步结果表明产生了催化物质,导致在室温下发生合理的转化。