反应详情

To a solution of 12.1 g. of 4-chlorophenylhydrazine hydrochloride in a mixture of 13.5 ml. of 5 N sodium hydroxide, 100 ml. of 30% aqueous acetic acid and 50 ml. of p-dioxane is added 10.0 g. of N-(dimethylaminomethylene pyrazinecarboxamide. The procedure of Example 2 is then followed giving 3.8 g. of the desired product as tan crystals, mp. 129°-131° C.

1. customThe procedure of Example 2 is then followed giving 3.8 g