Pyridine → HCID 66801575, compound

Participants

Reaction Conditions

Reaction Steps

A stirred suspension of 2,6-dichloro-N-(3,5-difluoropyridin-4-yl)-benzimidoyl chloride (15.4 g, 47.8 mmol), thiourea (14.5 g, 0.191 mol) and pyridine (19.3 mL, 0.239 mol) in isopropanol (250 mL) was heated at 85° C. for 4 hours under argon. To the mixture was added Et3N (40 mL, 0.287 mol) and heating at 85° C. was continued for 18 hours. After cooling to room temperature, the volatiles were removed under reduced pressure and the resultant residue was partitioned between EtOAc (500 mL) and water (500 mL). The aqueous phase was extracted with EtOAc (300 mL) and the combined organic layers were washed with water, then dried (Na2SO4) and concentrated under reduced pressure. The resultant residue was purified by column chromatography on silica gel eluting with 0-50% EtOAc in pentane to afford the title compound as a pale yellow solid (8.5 g, 59%). LCMS (Method D): RT=3.56 min, m/z: 299 [M+H+].

Provenance & Evidence