4-Substituted dihydropyrimidinones and dihydropyrimidines were first efficient aerobic oxidized to the corresponding pyrimidinones and pyrimidines, respectively, in high yields by molecular oxygen in the presence of catalytic amount of N-hydroxyphthalimide (NHPI) and Co(OAc)(2) in a mild and environmental benign condition. (C) 2011 Elsevier Ltd. All rights reserved.
Dhillon, Narpinderjeet K.; Jasmeen; Kaur, Komalpreet, Indian Journal of Heterocyclic Chemistry, 2021, vol. 31, # 4, p. 545 - 551