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Highly efficient oxidation of diphenylmethane to benzophenone employing a novel ruthenium catalyst with tert-butylhydroperoxide under mild conditions

Paper ID Volume ID Publish Year Pages File Format Full-Text
50911 46821 2013 4 PDF Available
Title
Highly efficient oxidation of diphenylmethane to benzophenone employing a novel ruthenium catalyst with tert-butylhydroperoxide under mild conditions
Abstract

•Ru(bpbp)(pydic) was used as catalyst in the oxidation of diphenylmethane.•Excellent turnover number of catalyst (94,000) was achieved in the catalytic oxidation.•Redox ruthenium species was confirmed by in situ UV–vis spectrum in the oxidation.

The ruthenium complex Ru(bpbp)(pydic) (bpbp = 2,6-bis(1-phenylbenzimidazol-2-yl), pydic = pyridine-2,6-dicarboxy acid) has been synthesized and tested in the selective oxidation of diphenylmethane to benzophenone utilizing tert-butylhydroperoxide as the terminal oxidant. The influence of various reaction parameters such as temperature, catalyst amount and nature of solvent on the activity and selectivity was evaluated. Diphenylmethane was converted with 94% conversion and 100% selectivity to benzophenone under the optimized reaction conditions, in which the turnover number (TON) of catalyst reached 94,000. Moreover, a plausible reaction mechanism through redox ruthenium species was proposed.

Graphical abstractThe ruthenium complex-catalyzed oxidation of diphenylmethane to benzophenone using tert-butylhydroperoxide as oxidant under mild conditions has been developed.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Diphenylmethane; Benzophenone; Oxidation; Ruthenium; tert-Butylhydroperoxide
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Highly efficient oxidation of diphenylmethane to benzophenone employing a novel ruthenium catalyst with tert-butylhydroperoxide under mild conditions
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 37, 5 July 2013, Pages 60–63
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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