4-Aminopyridine → HCID 19683068, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 5-bromo-thiophene-2sulphonyl chloride (1.31 g, 5.0 mmol), 4-dimethylamino-pyridine (0.61 g, 5.0 mmol) and 4-amino-pyridine (0.71 g, 7.5 mmol) in pyridine (20 ml) was stirred at 50° C. for 16 h. THE reaction mixture was evaporated and diluted with dichloromethane/MeOH/NH4OH 80:10:1. The formed precipitate was collected by filtration to yield the title compound (1.53 g, 96%) as an off-white solid, which was used without further purification. MS (ISN) 317.0 [(M−H)−], mp 310° C.

Provenance & Evidence