Citric Acid → N-[4-(4-Fluoro-2-methoxy-phenyl)-pyridin-3-yl]-3-mercapto-5,N-dimethyl-benzamide

Participants

Reaction Steps

To a solution of N-(4-(4-fluoro-2-methoxyphenyl)pyridin-3-yl)-N-methyl-3-(trifluoromethyl)-5-(2-(trimethylsilyl)ethylthio)benzamide (0.711 g, 1.32 mmol) in THF (12.6 mL) was added tetrabutylammonium fluoride (1M solution in THF, 6.96 mL, 6.96 mmol) and the clear light yellow solution was stirred at room temperature for 90 minutes. The reaction mixture was poured on 10% aqueous citric acid solution and EtOAc and the layers were separated. The aqueous layer was extracted twice with EtOAc. The organic layers were washed with brine, dried over MgSO4, filtered, treated with silica gel and evaporated. The compound was purified by silica gel chromatography on a 20 g column using an MPLC system eluting with a gradient of CH2Cl2:MeOH (100:0 to 90:10). Colorless solid (0.41 g; 63%). MS (ESI): m/z=437.09 [M+H]+.

Provenance & Evidence