反应详情

To a mixture of 2-(4-(4-ethoxy-6-((4-methoxybenzyl)oxy)pyridin-3-yl)-2-fluorophenyl)acetic acid (300 mg, 0.729 mmol), 3-(5-methyl-1,3,4-oxadiazol-2-yl)-5-(trifluoromethyl)aniline (195 mg, 0.802 mmol), and Et3N (0.203 ml, 1.458 mmol) in DCM (15 ml) was added HATU (333 mg, 0.875 mmol) at 25° C. Then the mixture was stirred for 2 h, the mixture was concentrated to give the residue which was extracted with DCM (30 mL×2). The organic extract was washed with brine (20 mL), dried over Na2SO4, filtered and concentrated. The crude product was purified by preparative TLC (DCM:MeOH=30:1, Rf=0.7) to yield 2-(4-(4-ethoxy-6-((4-methoxybenzyl)oxy)pyridin-3-yl)-2-fluorophenyl)-N-(3-(5-methyl-1,3,4-oxadiazol-2-yl)-5-(trifluoromethyl)phenyl)acetamide (60 mg, 0.094 mmol, 13% yield): 1H NMR (400 MHz, MeOD-d4) δ 8.52 (br. s., 1H), 7.99 (br. s., 1H), 7.95 (br. s., 1H), 7.42-7.39 (m, 2H), 7.30 (d, J=8.4 Hz, 3H), 6.89 (d, J=8.6 Hz, 3H), 6.52-6.50 (m, 1H), 5.11 (br. s., 2H), 4.64-4.62 (m, 2H), 4.31 (d, J=7.1 Hz, 2H), 2.63 (br. s., 3H), 1.38 (t, J=7.1 Hz, 3H); ES-LCMS m/z 637 (M+H).

1. concentrationthe mixture was concentrated
2. customto give the residue which
3. extractionwas extracted with DCM (30 mL×2)
4. extractionThe organic extract
5. washwas washed with brine (20 mL)
6. dry with materialdried over Na2SO4
7. filtrationfiltered
8. concentrationconcentrated
9. customThe crude product was purified by preparative TLC (DCM:MeOH=30:1, Rf=0.7)