Transfer hydrogenation of cyclohexanone by rhodium(II) carboxylato complexes containing 1,4-benzodiazepines as nitrogen ligands

Catalytic hydrogen transfer in the cyclohexanone/2-propanol system by complexes formed in situ of Rh 2(OAc) 4 and the nitrogen ligands of 1,4-benzodiazepine (1,4-BD) derivatives 1–8, is studied. The positive relation between k in and (1,4-BD)/Rh ratio indicated the homogeneous nature of the catalyti...

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Bibliographic Details
Published in:Journal of molecular catalysis 1991-10, Vol.69 (1), p.25-31
Main Authors: Marčec, Radovan, Raza, Zlata, Šunjić, Vitomir
Format: Article
Language:English
Subjects:
Catalysis
Catalytic reactions
Chemistry
Exact sciences and technology
General and physical chemistry
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Summary:Catalytic hydrogen transfer in the cyclohexanone/2-propanol system by complexes formed in situ of Rh 2(OAc) 4 and the nitrogen ligands of 1,4-benzodiazepine (1,4-BD) derivatives 1–8, is studied. The positive relation between k in and (1,4-BD)/Rh ratio indicated the homogeneous nature of the catalytic process, proved by the absence of the inhibiting effect of added mercury (Hg). A promoting effect of hydroxy ions on the rate was established, and the relation between ligand structure and catalytic activity of the complex, expressed by k obs and progress curves for the hydrogen transfer process, is discussed.
ISSN:0304-5102
DOI:10.1016/0304-5102(91)80101-8