Comparative transfer hydrogenation performance of homogeneous and heterogeneous ruthenium (II) catalysts derived from a Schiff base ligand

被引：7
|
作者：
Ispir, Esin [1 ]
Sahin, Ertan [2 ]
Ikiz, Mesut [1 ]
Aktas, Arif [1 ]
机构：
[1] Kahramanmaras Sutcu Imam Univ, Dept Chem, TR-46050 Kahramanmaras 9, Turkey
[2] Ataturk Univ, Fac Sci, Dept Chem, TR-25240 Erzurum, Turkey
来源：
JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2017年 / 830卷
关键词：
Ru(II) complex; Schiff base; Transfer hydrogenation; Heterogeneous catalyst; HIGHLY EFFICIENT; COMPLEXES; KETONES; NANOPARTICLES; REDUCTION; RHODIUM;
D O I：
10.1016/j.jorganchem.2016.12.027
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A new Schiff base ligand (E)-4-(((pyridin-2-ylmethylene)amino)methyl)phenol (L1H) 1 was synthesized and grafted to solid support successfully. Mononuclear Ru(II) complex 2, its solid supported analogue 4 and heterogeneous complex 5 were synthesized with [RuCl2(p-cymene)](2) and RuCl2(PPh3)dppb. According to the UV-visible, IR and NMR data, the Ru (II) complexes are formed by the coordination of both nitrogen atoms of the ligand. Molecular structures of the L1H 1 was determined by single crystal Xray diffraction study. The Ruthenium (II) complexes 2, 4 and 5 were used as catalysts for the transfer hydrogenation of various ketones in 2-propanol. Following the comparison of complexes 2, 4 and 5 between each other, it was observed that immobilized complexes have higher catalytic activity against the homogeneous structure. The results showed that the diphosphine incorporated complex 5 is more efficient than the other Ru (II) complexes. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：188 / 195
页数：8
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