Journal
CHEMCATCHEM
Volume 3, Issue 12, Pages 1929-1934Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cctc.201100206
Keywords
alkynes; carboxylic acids; homogeneous catalysis; iron; oxidation
Categories
Funding
- Cluster of Excellence Unifying Concepts in Catalysis
- Deutsche Forschungsgemeinschaft
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The iron-catalyzed oxidation of a variety of alkynes with hydrogen peroxide as the oxidant was examined in detail. Various reaction parameters were investigated in the oxidation of diphenyl acetylene. The best catalytic performance was observed for a combination of FeCl3 with 4-dimethylamino pyridine (DMAP) as the ligand, yielding various 1,2-diones in excellent yields and selectivities at room temperature. Moreover, by subsequently increasing the reaction temperature to 60?degrees C, a selective oxidative cleavage was observed, resulting in carboxylic acid derivatives.
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