Hydrazine hydrate (1:1) → HCID 178509230, compound

Participants

Reaction Steps

A suspension of 38.5 g (245.93 mmol) of 2-chloro-5-fluoronicotinonitrile was initially charged in 1,2-ethanediol (380 ml), and hydrazine hydrate (119.6 ml, 2.459 mol) was then added. The mixture was heated under reflux while stirring for 4 h. The product precipitated in the course of cooling. Water (380 ml) was added to the yellow crystals, and the mixture was stirred at RT for 10 min. The suspension was then filtered with suction through a frit and washed through with water (200 ml) and with THF at −10° C. (200 ml). The residue was dried under high vacuum over phosphorus pentoxide.

Provenance & Evidence