A Masked Cuprous Hydride as a Catalyst for Carbonyl Hydrosilylation in Aqueous Solutions

被引：22
作者：
Ritter, Florian [1 ]
Mukherjee, Debabrata [1 ,2 ]
Spaniol, Thomas P. [1 ]
Hoffmann, Alexander [1 ]
Okuda, Jun [1 ]
机构：
[1] Rhein Westfal TH Aachen, Inst Inorgan Chem, Landoltweg 1, D-52056 Aachen, Germany
[2] Indian Inst Technol Kharagpur, Dept Chem, Kharagpur 721302, W Bengal, India
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2019年 / 58卷 / 06期
关键词：
carbonyl reduction; catalysis in water; copper; hydridotriphenylborate; hydrosilylation; COPPER HYDRIDE; CRYSTALLOGRAPHIC CHARACTERIZATION; CONJUGATE REDUCTION; COMPLEXES; REACTIVITY; NA; TRANSFORMATIONS; REAGENT; LIGAND; WATER;
D O I：
10.1002/anie.201811890
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Redox-unstable cuprous hydridotriphenylborate was isolated as an N-heterocyclic carbene adduct [(IPr)Cu-(HBPh3)] (IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene) with good thermal stability. Although this compound displays a contact ion-pair structure, (CuH)-H-I-like catalytic activity was envisaged in carbonyl hydrosilylation. Sufficient moisture stability allowed the catalysis in aqueous/organic media. Mechanistic study further showed that a phenyl group on the borate anion is abstracted by [(IPr)Cu](+) to give the cationic organocopper complex [(IPr)(2)Cu-2(mu-Ph)][BPh4].
引用
收藏
页码：1818 / 1822
页数：5
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