ChemInform Abstract: ACTIVITIES OF RUTHENIUM COMPLEXES IN HOMOGENEOUS BULK HYDROGEN-TRANSFER REACTION

1980 ◽  
Vol 11 (46) ◽  
Author(s):  
B. GRASER ◽  
H. STEIGERWALD
2015 ◽  
Vol 11 ◽  
pp. 1786-1795 ◽  
Author(s):  
Chao Chen ◽  
Chunxin Lu ◽  
Qing Zheng ◽  
Shengliang Ni ◽  
Min Zhang ◽  
...  

Ruthenium complexes [Ru(L1)2(CH3CN)2](PF6)2 (1), [RuL1(CH3CN)4](PF6)2 (2) and [RuL2(CH3CN)3](PF6)2 (3) (L1= 3-methyl-1-(pyrimidine-2-yl)imidazolylidene, L2 = 1,3-bis(pyridin-2-ylmethyl)benzimidazolylidene) were obtained through a transmetallation reaction of the corresponding nickel–NHC complexes with [Ru(p-cymene)2Cl2]2 in refluxing acetonitrile solution. The crystal structures of three complexes determined by X-ray analyses show that the central Ru(II) atoms are coordinated by pyrimidine- or pyridine-functionalized N-heterocyclic carbene and acetonitrile ligands displaying the typical octahedral geometry. The reaction of [RuL1(CH3CN)4](PF6)2 with triphenylphosphine and 1,10-phenanthroline resulted in the substitution of one and two coordinated acetonitrile ligands and afforded [RuL1(PPh3)(CH3CN)3](PF6)2 (4) and [RuL1(phen)(CH3CN)2](PF6)2 (5), respectively. The molecular structures of the complexes 4 and 5 were also studied by X-ray diffraction analysis. These ruthenium complexes have proven to be efficient catalysts for transfer hydrogenation of various ketones.


ChemInform ◽  
2005 ◽  
Vol 36 (45) ◽  
Author(s):  
Takanori Tanaka ◽  
Hirotoshi Kawabata ◽  
Masahiko Hayashi

2018 ◽  
Vol 8 (13) ◽  
pp. 3246-3259 ◽  
Author(s):  
Priti Sharma ◽  
Jayant Rathod ◽  
A. P. Singh ◽  
Pradeep Kumar ◽  
Yoel Sasson

Remarkable reactivity of solid catalyst in H2O medium for the regioselective 1,4-disubstituted 1,2,3-triazole with excellent yield in one pot.


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