Efficient Homogeneous Catalysis in the Reduction of CO2 to CO
Author(s) -
David S. Laitar,
Péter Müller,
Joseph P. Sadighi
Publication year - 2005
Publication title -
journal of the american chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 7.115
H-Index - 612
eISSN - 1520-5126
pISSN - 0002-7863
DOI - 10.1021/ja0566679
Subject(s) - chemistry , reagent , stoichiometry , alkoxide , catalysis , copper , homogeneous , ligand (biochemistry) , boron , medicinal chemistry , reduction (mathematics) , homogeneous catalysis , stereochemistry , organic chemistry , receptor , thermodynamics , biochemistry , physics , geometry , mathematics
The well-defined copper(I) boryl complex [(IPr)Cu(Bpin)] [where IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene, and pin = pinacolate: 2,3-dimethyl-2,3-butanediolate] deoxygenates CO2 rapidly and quantitatively, affording CO and the borate complex [(IPr)Cu(OBpin)]. The boryl may be regenerated by treatment with the diboron compound pinB-Bpin, giving the stable byproduct pinB-O-Bpin. The use of a copper(I) alkoxide precatalyst and stoichiometric diboron reagent results in catalytic reduction of CO2, with high turnover numbers (1000 per Cu) and frequencies (100 per Cu in 1 h) depending on supporting ligand and reaction conditions.
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