P,N,O type chiral imino- and aminophosphine ligands and their applications in Ru(II)-catalyzed asymmetric transfer hydrogen reactions
作者:Mustafa Keleş、Mustafa Kemal Yılmaz、Simay İnce、Hülya Keleş、Hakan Ünver
DOI:10.1016/j.ica.2020.120022
日期:2021.1
of these imino- and aminophosphine ligands were tested in ruthenium catalyzed asymmetric transfer hydrogenation of aromatic ketones in 2-propanol. Ruthenium(II) complexes were generated in situ from Ru(cod)Cl2, Ru(dmso)4Cl2, Ru(PPh3)3Cl2 and [Ru(p-cymene)Cl2]2 precursors. According to the chromatographic analyses, isopropyl- substituted chiral aminophosphine ligand 2-((2-(diphenylphosphinyl)benzyl)amino)-3-methyl-1
摘要合成了被甲基,异丙基,苯基和苄基取代的手性P,N,O型亚氨基(1a-d)和氨基膦配体(2a-d),并通过NMR,FTIR等光谱技术对其进行了表征。和HRMS。还通过单晶X射线衍射分析确定了配体1c的结构。X射线数据表明,化合物1c表现出具有C40H34NOP分子式的三斜-P1空间基团。在钌催化的2-丙醇中芳族酮的不对称转移氢化反应中测试了这些亚氨基和氨基膦配体的催化性能。从Ru(cod)Cl2,Ru(dmso)4Cl2,Ru(PPh3)3Cl2和[Ru(对-cymene)Cl2] 2前体原位生成钌(II)配合物。根据色谱分析,