Triethylamine → N-(4-(2-(benzyloxy)ethoxy)-3-(trifluoromethyl)phenyl)-2-(4-bromo-2,6-difluorophenyl)acetamide

온도

25 °C

To a solution of 2-(4-bromo-2,6-difluorophenyl)acetic acid (0.3 g, 1.195 mmol) in sulfurous dichloride (5 mL, 1.195 mmol) was added DMF (9.25 μL, 0.120 mmol). The resulting mixture was stirred at 60° C. After 2 h, LCMS analysis showed the starting material had disappeared and the solvent was removed in vacuo to give 2-(4-bromo-2,6-difluorophenyl)acetyl chloride (0.35 g, 0.832 mmol, 69.6% yield). To a solution of 4-(2-(benzyloxy)ethoxy)-3-(trifluoromethyl)aniline (0.347 g, 1.113 mmol) and Et3N (0.225 g, 2.227 mmol) in DCM (30 mL) was added 2-(4-bromo-2,6-difluorophenyl)acetyl chloride (0.3 g, 1.113 mmol). The resulting mixture was stirred at 25° C. After LCMS analysis showed the starting material had disappeared, the mixture was washed with H2O (20 mL) and brine (20 mL). The organic layer was dried over Na2SO4, filtered, concentrated, and purified by preparative TLC (PE/EA=3/1) to give N-(4-(2-(benzyloxy)ethoxy)-3-(trifluoromethyl)phenyl)-2-(4-bromo-2,6-difluorophenyl)acetamide (110 mg, 0.196 mmol, 17.6% yield): 1H NMR (400 MHz, CD3OD) δ 7.81 (d, J=2.8 Hz, 1H), 7.68 (d, J=2.4 Hz, 1H), 7.32-7.25 (m, 7H), 7.15 (d, J=8.8 Hz, 1H), 4.61 (s, 2H), 4.23 (t, J=4.6 Hz, 2H), 3.84 (t, J=4.6 Hz, 2H), 3.77 (s, 2H); ES-LCMS m/z 546.0 (M+H).

1. washthe mixture was washed with H2O (20 mL) and brine (20 mL)
2. dry with materialThe organic layer was dried over Na2SO4
3. filtrationfiltered
4. concentrationconcentrated
5. custompurified by preparative TLC (PE/EA=3/1)

ORD 기록

ord-874974ca9e5241b0aa84568aae1453fd

출처 데이터셋

uspto-grants-2016_07

DOI

10.6084/m9.figshare.5104873.v1

특허 번호

US09382238B2