Abstract Formylation of 6-methyl-2 S -substituted pyrimidin-4-ols under the conditions of the Vilsmeier–Haack reaction leads to the formation of nucleophilic substitution products of the hydroxyl group. The formation of the… Click to show full abstract
Abstract Formylation of 6-methyl-2 S -substituted pyrimidin-4-ols under the conditions of the Vilsmeier–Haack reaction leads to the formation of nucleophilic substitution products of the hydroxyl group. The formation of the expected formylation products does not occur.
               
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