Hydrochloric Acid → HCID 58011742, compound

Participants

Reaction Steps

1.00 g (3.92 mmol) of N-cyclopropyl-2-(2,4-difluorobenzoyl)-hydrazinecarboxamide from Example 5A are heated under reflux in 4 ml 4 N aqueous sodium hydroxide for 28 hrs. After cooling, it is acidified to about pH 2 with 2 N hydrochloric acid, diluted with water and extracted four times with ethyl acetate. The combined organic phases are dried over magnesium sulphate, filtered, concentrated and the residue dried in vacuo. 0.415 g (31% of theory) of the target compound are thus obtained, which is further reacted as such.

Provenance & Evidence