反应详情

Prepared using General Procedure 6: A solution of mono-methyl terephthalate (315 mg, 1.75 mmol), HOBt (395 mg, 2.92 mmol), EDC (562 mg, 2.92 mmol) and DIEA (509 μL, 2.92 mmol) in DMF (10 mL) was stirred at room temperature. After 30 min, 4-methoxy-2-(trifluoromethyl)benzylamine (300 mg, 1.46 mmol) was added as a solution in DMF (2 mL). After stirring for 18 h, the reaction mixture was diluted with NaHCO3 and extracted with EA. The combined organic layers were dried (Na2SO4) and purified by chromatography (EA/hexanes) to provide 418 mg (78%) of methyl 4-((4-methoxy-2-(trifluoromethyl)benzyl)carbamoyl)benzoate INT-52. LCMS-ESI (m/z) calculated for C18H16F3NO4: 367; no m/z observed, tR=3.42 min (Method 1). 1H NMR (400 MHz, CDCl3) δ 8.13-8.04 (m, 2H), 7.85-7.75 (m, 2H), 7.59 (d, J=8.6 Hz, 1H), 7.19 (d, J=2.7 Hz, 1H), 7.05 (dd, J=8.5, 2.7 Hz, 1H), 6.44 (s, 1H), 4.75 (d, J=5.9 Hz, 2H), 3.94 (s, 3H), 3.84 (s, 3H).

1. customPrepared
2. extractionextracted with EA
3. dry with materialThe combined organic layers were dried (Na2SO4)
4. custompurified by chromatography (EA/hexanes)