反应详情

A mixture of 2.0 g of 2'-hydrazino-2,4'-bipyridine and 50 ml of triethyl orthoformate was heated on a steam bath for 18 hours then chilled and filtered. The crystals were dissolved in methylene chloride, treated with activated carbon, filtered and the filtrate concentrated. Chilling and filtration gave 1.5 g of the desired product as cream colored crystals, mp 144-°145° C.

1. temperaturewas heated on a steam bath for 18 hours
2. temperaturethen chilled
3. filtrationfiltered
4. dissolutionThe crystals were dissolved in methylene chloride
5. additiontreated with activated carbon
6. filtrationfiltered
7. concentrationthe filtrate concentrated
8. temperatureChilling
9. filtrationfiltration