Synthesis of Ruthenium(II) Complexes Containing Tridentate Triamine (′N ͡N ͡N′) and Bidentate Diamine Ligands (N ͡N′): as Catalysts for Transfer Hydrogenation of Ketones
作者:Salih Günnaz、Namık Özdemir、Serkan Dayan、Osman Dayan、Bekir Çetinkaya
DOI:10.1021/om200470p
日期:2011.8.8
upon replacement of p-cymene by meridional ′N ͡N ͡N′. The complexes 1–10 were screened for transfer hydrogenation (TH) of aryl ketones with 2-propanol. The highest catalytic activity was obtained with the complexes containing tridentate ′N ͡N ͡N′ and 7, which contain nonsulfonated 2-(aminomethyl)pyridine. However, for complexes 6a–c, containing p-cymene (a facial tridentate ligand), a slower reaction
一系列中性和阳离子的Ru(II)络合物(1 - 10),轴承吡啶系三齿('N N N'),吡啶系双齿(N N'),并混合'N N N'+ N N通过从[RuCl 2(DMSO)4 ]和[RuCl 2(p- cymene)] 2前体开始合成''配体。通过单晶X射线衍射确定混合配体络合物9和10的固态结构。两种配合物都不同寻常,因为在无碱条件下,N͡N'配体在空气中自发氧化,在取代p后得到亚胺-胺二齿配体子午线'N͡N′N'。配合物1 - 10筛选芳基酮的转移氢化(TH)与2-丙醇。含有三齿'N͡N͡N'和7的配合物获得了最高的催化活性,所述配合物含有未磺化的2-(氨基甲基)吡啶。但是,对于含有p - Cymene(面部三齿配体)的复合物6 a-c,观察到较慢的反应速率。