反应详情

A mixture of 1.0 g. of g. of 6-(m-aminophenyl)-1,2,4-triazolo[4,3-b]pyridazine (prepared as in Example 26) and 4 ml. of acetic anhydride is left at room temperature for 2 hours and then is triturated with ether and filtered. The insoluble material is recrystallized from ethyl alcohol to afford yellow crystals of 6-(m-acetamidophenyl)-1,2,4-triazolo[4,3-b]pyridazine, m.p. 248°-250° C.

1. additionA mixture of 1.0 g
2. customis triturated with ether
3. filtrationfiltered
4. customThe insoluble material is recrystallized from ethyl alcohol