Acetate Acetylacetonate Ampy Ruthenium(II) Complexes as Efficient Catalysts for Ketone Transfer Hydrogenation

被引：13
作者：
Hey, Daniela A. [1 ,2 ]
Sauer, Michael J. [1 ,2 ]
Fischer, Pauline J. [1 ,2 ]
Esslinger, Eva-Maria H. J. [1 ,2 ]
Kuehn, Fritz E. [1 ,2 ]
Baratta, Walter [3 ]
机构：
[1] Tech Univ Munich, Mol Catalysis, Catalysis Res Ctr, Lichtenbergstr 4, D-85748 Munich, Germany
[2] Tech Univ Munich, Dept Catalysis, Lichtenbergstr 4, D-85748 Munich, Germany
[3] Univ Udine, Dipartimento Sci AgroAlimentari Ambientali & Anim, Via Cotonificio 108, I-33100 Udine, Italy
来源：
CHEMCATCHEM | 2020年 / 12卷 / 13期
关键词：
acetylacetonate; 2-(aminomethyl)pyridine; hydrogenation; ruthenium complexes; transfer hydrogenation; ASYMMETRIC HYDROGENATION; PINCER; ALCOHOLS; MECHANISM; BEHAVIOR; LIGANDS;
D O I：
10.1002/cctc.202000542
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The mixed acetate acetylacetonate (acac) ruthenium(II) phosphine complexes Ru(OAc)(acac)P-2 [P-2=(PPh3)(2), Ph2P(CH2)(4)PPh2 (dppb)] were prepared by protonation of Ru(OAc)(2)(PPh3)(2) with acetylacetone in dichloromethane. Reaction of the dppb derivative with 2-(aminomethyl)pyridine (ampy) affords the complex Ru(OAc)(acac)(ampy)(dppb), which converts to [Ru(acac)(ampy)(dppb)](OAc) in toluene at 90 degrees C. In the former derivative the ampy ligand is monodentate and coordinates through the NH2-moiety. The isolated acac complexes are active catalysts for the transfer hydrogenation of ketones with loadings as low as 0.01 mol%, the ampy having a strong accelerating effect. Several aromatic and aliphatic ketone substrates are converted to their corresponding alcohols, and different electronic influences through substituents on acetophenone are tolerated.
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收藏
页码：3537 / 3544
页数：8
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