Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 75, Issue 15, Pages 5065-5071Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jo100793j
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Funding
- Russian Federation [NSh 4945.2010.3]
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The transition metal (Cu, Fe, Mn, Co) catalyzed peroxidation of beta-dicarbonyl compounds at the a. position by tert-butyl hydroperoxide was discovered. A selective, experimentally convenient, and gram-scale method was developed for the synthesis of alpha-peroxidated derivatives of beta-diketones, beta-keto esters, and diethyl malonate. Virtually stoichiometric (2-3/1) molar ratios of tert-butyl hydroperoxide and a dicarbonyl compound were used in the reactions with beta-diketones and beta-keto esters. The target compounds were synthesized in the highest yields from beta-keto esters (45-90%) and in somewhat lower yields from beta-diketones (46-75%) and malonates (37-67%).
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