反应详情

To a solution of {2-[5-(4-fluoro-phenyl)-3-(2,4,6-trifluoro-benzoyl)-2,3-dihydro-[1,3,4]thiadiazol-2-yl]-phenoxy}-acetic acid methyl ester (2.93 mmol) in 30 mL of a mixture of THF and MeOH (3:2), is added LiOH (1 M) (30 mL). After stirring for 12 hours the reaction is complete as determined by LC/MS. The reaction is diluted with ethyl acetate and water, washed with brine and dried over MgSO4 and the solvent is removed from the reaction mixture to yield {2-[5-(4-Fluoro-phenyl)-3-(2,4,6-trifluoro-benzoyl)-2,3-dihydro-[1,3,4]thiadiazol-2-yl]-phenoxy}-acetic acid: 1H NMR (400 MHz, acetone-d6) δ 7.66 (m, 3H), 7.39 (m, 1H), 7.3 (dd, J1=7.6 Hz, J2=1.6 Hz, 1H), 7.22 (m, 4H), 7.13 (m, 1H), 7.07 (t, J=7.6 Hz, 1H), 4.94 (s, 2H); LC/MS (ES+): 491.0 (M+1)+.

1. washwashed with brine
2. dry with materialdried over MgSO4
3. customthe solvent is removed from the reaction mixture