反应详情

A mixture of 2.0 g of 2'-hydrazino-2,4'-bipyridine and 50 ml of triethyl orthoacetate was heated on a steam bath for 18 hours, then chilled, filtered and the crystals washed with hexane. These crystals were recrystallized from methylene chloride, giving 1.8 g of the desired product as white crystals, mp 239°-241° C.

1. temperaturewas heated on a steam bath for 18 hours
2. temperaturechilled
3. filtrationfiltered
4. washthe crystals washed with hexane
5. customThese crystals were recrystallized from methylene chloride