Journal
TETRAHEDRON LETTERS
Volume 53, Issue 28, Pages 3590-3593Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2012.05.015
Keywords
Cobalt; Oxidative carbonylation; Amines; Organic bases
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Funding
- University of Milan-Bicocca FAR
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The use of organic bases as promoters in the cobalt(II)-Schiff base complex catalyzed oxidative carbonylation of amines was investigated. The generality of the reaction was also studied by submitting different amines to the same procedure and by changing the reaction conditions. Very good yields in the corresponding ureas were achieved in toluene with a catalyst loading of 0.5 mol % and using TBD (1,5,7-triazabicyclo[4.4.0]dec-5-ene) as promoter. Methyl carbamates were obtained in methanol. (C) 2012 Elsevier Ltd. All rights reserved.
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