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A series of 2,6-disubstituted pyridine ester derivatives and the corresponding amides were prepared. The esters were hydrolysed to the sodium salts, which were treated with acetic anhydride to afford oxazinone derivatives. These were treated with ammonium acetate to afford 2-methylpyrimidinone derivatives, which were methylated to yield 2,3-dimethylpyrimidinone derivatives. In addition, they were...
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