反应详情

0.386 g (0.7 mmol) of the above prepared 2-{4-[4-cyclopropyl-2-(4-trifluoromethoxy-phenyl)-pyrimidin-5-ylmethylsulfanyl]-2-methyl-phenoxy}-2-methyl-propionic acid ethyl ester was dissolved in 12 ml of THF/EtOH (1:1), treated at 0° C. with 2.12 ml (2.1 mmol) of 1N LiOH, and kept at ambient temperature for 23 h. The reaction mixture was taken up in ether and washed with aqueous 10% KHSO4 solution and aqueous 10% NaCl solution. The water phases were extracted with ether (2×). The organic phase was dried (Na2SO4) and evaporated. The crude product was precipitated in ether/pentane (RT to 4° C.) and filtered to give 0.289 g of the title compound as white crystals of mp. 127–128° C., dec.

1. washwashed with aqueous 10% KHSO4 solution and aqueous 10% NaCl solution
2. extractionThe water phases were extracted with ether (2×)
3. dry with materialThe organic phase was dried (Na2SO4)
4. customevaporated
5. customThe crude product was precipitated in ether/pentane (RT to 4° C.)
6. filtrationfiltered