Trifluoroacetic acid → HCID 69220462、化合物
反応式
[CH3:1][O:2][C:3](=[O:38])[CH2:4][O:5][C:6]1[CH:11]=[CH:10][C:9]([N:12](C(OC(C)(C)C)=O)[CH2:13][C:14]2[S:18][C:17]([C:19]3[CH:24]=[CH:23][C:22]([C:25]([F:28])([F:27])[F:26])=[CH:21][CH:20]=3)=[N:16][C:15]=2[CH3:29])=[CH:8][C:7]=1[CH3:37].C(O)(C(F)(F)F)=O>C(Cl)Cl>[CH3:1][O:2][C:3](=[O:38])[CH2:4][O:5][C:6]1[CH:11]=[CH:10][C:9]([NH:12][CH2:13][C:14]2[S:18][C:17]([C:19]3[CH:24]=[CH:23][C:22]([C:25]([F:28])([F:26])[F:27])=[CH:21][CH:20]=3)=[N:16][C:15]=2[CH3:29])=[CH:8][C:7]=1[CH3:37]参加物
4
実験手順
A solution of crude (4-{tert-butoxycarbonyl-[4-methyl-2-(4-trifluoromethyl-phenyl)-thiazol-5-ylmethyl]-amino}-2-methyl-phenoxy)-acetic acid methyl ester (2.1 g containing 1.83 g, 3.32 mmol) in CH2Cl2 (33 ml) was treated at 0° C. with TFA (12.7 ml) and stirred at RT for 45 min. The reaction was evaporated, treated with chilled aqueous saturated NaHCO3 solution/Et2O (3×). The organic phases were washed with aqueous 10% NaCl, dried (Na2SO4) and evaporated. Purification by flash chromatography with a gradient of n-heptane:EtOAc 95:5 to 4:1 yielded 0.34 g of (2-methyl-4-{[4-methyl-2-(4-trifluoromethyl-phenyl)-thiazol-5-ylmethyl]-amino}-phenoxy)-acetic acid methyl ester as an light yellow solid, MS: 451.3 (MH+).