2-Propoxybenzoyl chloride → HCID 178458320, compound

Participants

Reaction Steps

A solution of 2-n-propoxybenzoyl chloride (57.6 g, 0.291 mol) in dichloromethane (50 ml) was added dropwise to a stirred, ice-cooled suspension of 4-amino-3-propyl-1H-pyrazole-5-Carboxamide (the compound of Preparation 8 of WO 98/49166) (35.0 g, 0.208 mol) in dry pyridine (350 ml) and the resulting mixture stirred for 18 hours at room temperature, then evaporated under reduced pressure. The residue was azeotroped with toluene (2×100 ml) and the resulting brown solid triturated with ether (100 ml) to give the title compound (83.0 g) as a beige solid.

Provenance & Evidence