Abstract
Treatment of cyclohexanone-2-carboxamide with cyclic ketones provides oxazine derivatives while refluxing in toluene with ammonium acetate and cyclic ketones yields substituted 2-spiropyrimidin-4-ones. Depending on the ratio of reactants, the oxazines and substituted 2-spiropyrimidin-4-ones under Vilsmeier-Haack conditions undergo formylation or an electrophilic rearrangement. Authors: V. I. Markov, O. K. Farat, S. A. Varenichenko, E. V. Velikaya, R. I. Zubatyuk, and O. V. Shishkin. English Translation in Chemistry of Heterocyclic Compounds , 2013, 49 (8), pp 1158-1165 http://link.springer.com/article/10.1007/s10593-013-1358-2
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