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.
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