Acetic Anhydride → N-(8-Methyl-7-phenyl[1,2,4]triazolo[1,5-c]pyrimidin-5-yl)acetamide

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Reaction Steps

6.6 Parts of 8-methyl-7-phenyl-1,2,4-triazolo[2,3-c]pyrimidin-5-amine (Example 1) is suspended in 50 parts by volume pyridine and 10 parts by volume acetic anhydride. The solution is stirred at room temperature for approximately 18 hours until a clear solution is formed. After approximately 21 hours turbidity develops and a solid gradually forms. After standing for approximately 40 hours most of the solvent is removed in vacuo. The residue is stirred in water, filtered, washed with water and dried. The product is recrystallized from methanol to give N-[8-methyl-7-phenyl-1,2,4-triazolo[2,3-c]pyrimidin-5-yl]acetamide having the formula: ##STR8##

Provenance & Evidence