Dichloromethane → HCID 90408779, compound

Participants

Reaction Steps

Methyl 4-amino-3-chloro-6-(2,3-difluoro-4-(trimethylsilyl)phenyl)-5-fluoropicolinate (2.5 g, 6.43 mmol) was dissolved in acetonitrile (32 mL) and bromine (3.31 mL, 64.3 mmol) was added. The reaction mixture was stirred at room temperature for 4 h at which time LCMS indicated the reaction was mostly complete. The reaction mixture was partitioned between dichloromethane and water and sodium thiosulfate (10.17 g, 64.3 mmol) was added. The aqueous phase was extracted with dichloromethane and the organic extracts were combined and concentrated under vacuum. The product was purified by flash chromatography (SiO2, eluting with 5-40% ethyl acetate in hexanes) to provide the title compound as a light yellow solid (1.62 g, 63.7%).

Provenance & Evidence