Picolinic acid → 3-(4-(3-(1,1-Difluoroethyl)phenoxy)phenyl)pyridin-2-amine

Participants

Reaction Conditions

Reaction Steps

Copper(I) iodide (102 mg) was added to a mixture of picolinic acid (66.1 mg), 4-(2-aminopyridin-3-yl)phenol (500 mg), tripotassium phosphate (1710 mg), 1-bromo-3-(1,1-difluoroethyl)benzene (712 mg) and DMSO (8 mL). The mixture was stirred at 130° C. under nitrogen for 10 hr. Activated carbon was added and the insoluble solid was removed by filtration through NH-silica gel/Celite pad (eluted with EtOAc). Silica-gel was added to the filtrate and the volatiles were removed in vacuo. The mixture supported on silica-gel was purified by column chromatography (NH-silica gel, eluted with EtOAc in hexane) and concentrated. The residue was purified by column chromatography (silica gel, eluted with EtOAc in hexane) to give the title compound (499 mg) as pale yellow oil.

Provenance & Evidence