反应详情

A solution of (2-methyl-4-{[4-methyl-2-(4-trifluoromethyl-phenyl)-thiazol-5-ylmethyl]-amino}-phenoxy)-acetic acid methyl ester (330 mg, 0.73 mmol) in THF (2.2 ml) and ethanol (2.2 ml) was treated at 0° C. with 1N LiOH (2.2 ml) and stirred for 1.25 h at RT. The reaction was extracted with aqueous 10% KHSO4/Et2O (3×). The organic phase was washed with aqueous 10% NaCl, dried over Na2SO4 and evaporated. The product was crystallized from CH2Cl2/Et2O to give pure (2-methyl-4-{[4-methyl-2-(4-trifluoromethyl-phenyl)-thiazol-5-ylmethyl]-amino}-phenoxy)-acetic acid, MS: 437.4 (MH)+, MP: 201-203° C., dec.

1. extractionThe reaction was extracted with aqueous 10% KHSO4/Et2O (3×)
2. washThe organic phase was washed with aqueous 10% NaCl
3. dry with materialdried over Na2SO4
4. customevaporated
5. customThe product was crystallized from CH2Cl2/Et2O