Methyl 4-(2-(4-fluoro-2-methoxyphenoxy)phenylcarbamoyl)benzoate → HCID 59783633, compound

Participants

Reaction Conditions

Reaction Steps

A stirring mixture of title compound 92 (2 g, 5.06 mmol) in polyphosphoric acid (4.76 ml, 41.7 mmol) was heated at 130° C. for 3 h. The reaction mixture was cooled, diluted with dichloromethane and water and stirred overnight. The layers were separated and the aqueous layer was extracted with dichloromethane. The combined organic layers were washed with brine, dried over MgSO4, filtered and solvent evaporated. The crude residue was purified via ISCO (0-25% Hex/EtOAc; 40 g silica gel column) to afford title compound 93 (125 mg, 6.5%) as a light yellow solid. LRMS (ESI): (calc) 377.11 (found) 378.4 (MH)+.

Provenance & Evidence