反应详情

A solution of 2-fluoro-4-(1,1,2,2,2-pentafluoroethyl)benzoic acid (80.48 mg, 0.31 mmol), ethyl 5-aminopyridine-2-carboxylate (57.0 mg, 0.34 mmol), HATU (130.4 mg, 0.34 mmol) and N-methylmorpholine (68.57 μL, 0.62 mmol) in DMF (1 mL) was stirred at 25° C. for 16 hours. The reaction mixture was poured into water and extracted with ethyl acetate (3×). The organics were combined, washed with water, brine, dried over Na2SO4, filtered and evaporated to give ethyl 5-[[2-fluoro-4-(1,1,2,2,2-pentafluoroethyl)benzoyl]amino]pyridine-2-carboxylate (110 mg, 87%) as an orange waxy solid. ESI-MS m/z calc. 406.07, found 407.3 (M+1)+; Retention time: 1.64 minutes (3 minutes run).

1. extractionextracted with ethyl acetate (3×)
2. washwashed with water, brine
3. dry with materialdried over Na2SO4
4. filtrationfiltered
5. customevaporated