反应详情

温度

100 °C

To the solution of 24 g (0.055 mol) [2-(4-chloro-phenyl)-5,6-difluoro-benzoimidazol-1-yl]-cyclohexyl-acetic acid ethyl ester in 240 ml dioxan, 240 ml water and 7.0 g (0.166 mol) lithium hydroxide monohydrate were added. The solution was stirred for 2 h at 100° C. After cooling to room temperature the organic solvent was evaporated. Under stirring 162 ml 1M hydrochloric acid were added. The resulting suspension was filtered, the filter cake washed with water and dried under high vacuum to give 21.7 g (95%) of the desired compound as a white solid. MS (ES−): 403 (M−H).

1. temperatureAfter cooling to room temperature the organic solvent
2. customwas evaporated
3. stirringUnder stirring 162 ml 1M hydrochloric acid
4. additionwere added
5. filtrationThe resulting suspension was filtered
6. washthe filter cake washed with water
7. customdried under high vacuum