Abstract
H 2 O 2 oxidizes cyclohexane and other alkanes in CH 3 CN at 20-70°C in the presence of the catalyst Bu 4 NVO 3 -pyrazine-2-carboxylic acid (ratio 1 : 4) to afford, after reduction with PPh 3 , the corresponding alcohol and carbonyl derivatives (the ratio decreases from 12 to 4 on raising the temperature from 20 to 70°C). The product yield reaches 46%, based on H 2 O 2 , and the turnover number is ca. 1000. The oxidation appears to give predominantly alkyl peroxides. which are partially decomposed in the course of the reaction. Peroxides can be formed when alkyl radicals, generated from alkanes, and radical-like species react with O 2 or abstract OOH groups from the vanadium complex. Benzene and its alkyl derivatives are oxidized to produce phenols as well as side-chain oxidation derivatives
Published Version
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