反应详情

温度

135 °C

{1-[2-[2-(4-Bromo-phenyl)-2-oxo-ethylcarbamoyl]-4-(2,2,2-trifluoro-ethyl)-piperazine-1-carbonyl]-2-methyl-propyl}-carbamic acid methyl ester (192 mg, 0.34 mmol) was dissolved in m-Xylenes (2 mL) and heated at 135° C. Solid ammonium acetate (128 mg, 1.66 mmol) was added and the reaction was stirred at 135° C. After 110 minutes, the reaction was cooled to room temperature and the volatiles were removed in vacuo. The crude material was purified via silica gel chromatography (eluent: EtOAc w MeOH 10%/hexanes) to yield the product {1-[2-[4-(4-Bromo-phenyl)-1H-imidazol-2-yl]-4-(2,2,2-trifluoro-ethyl)-piperazine-1-carbonyl]-2-methyl-propyl}-carbamic acid methyl ester (98.7 mg, 0.181 mmol): LCMS-ESI−: calc'd for C22H27BrF3N5O3: 546.4 (M+). Found: 546.0/548.2 (M+H+).

1. temperaturethe reaction was cooled to room temperature
2. customthe volatiles were removed in vacuo
3. customThe crude material was purified via silica gel chromatography (eluent: EtOAc w MeOH 10%/hexanes)