反应详情

A 6.0 g. portion of N-(dimethylaminomethylene)isonicotinamide is added to a mixture prepared by adding 6.05 g. of p-fluorophenylhydrazine hydrochloride to 80 ml. of 30% aqueous acetic acid, 40 ml. of p-dioxane and 7.5 ml. of 5 N sodium hydroxide. The mixture is heated to reflux for 1.5 hours, poured into water and allowed to stand overnight. Extraction with ether gives a dark solid which is recrystallized from acetone-hexane giving 1.7 g. of the desired product, mp. 114°-115° C.

1. customprepared
2. additionby adding 6.05 g
3. temperatureThe mixture is heated
4. temperatureto reflux for 1.5 hours
5. extractionExtraction with ether
6. customgives a dark solid which
7. customis recrystallized from acetone-hexane giving 1.7 g