反应详情

HATU (1.19 g, 3.13 mmol) was added to 3-{[(1S)-1-methylpropyl]oxy}-5-[(phenylmethyl)oxy]benzoic acid (750 mg, 2.5 mmol) and 3-amino-1 methylpyrazole (291 mg, 3 mmol) in DMF (5 mL) followed by addition of DIPEA (0.807 mL, 6.25 mmol) and the reaction was stirred for 16 hours. The reaction mixture was added to ethyl acetate (30 mL), washed with water (10 mL), 2N citric acid (10 mL), saturated aqueous sodium hydrogencarbonate (10 mL) and brine (10 mL), then dried (MgSO4), filtered and evaporated to a gummy residue. The residue was taken up in 50% ether in ethylacetate (50 mL), washed with 2N hydrochloric acid (10 mL), water (10 mL), saturated aqueous sodium hydrogencarbonate (10 mL) and brine (10 mL) then dried (MgSO4), filtered and evaporated to a foam (900 mg) which was used without further purification in the next step. 1H NMR δ (CDCl3): 0.96 (t, 3H), 1.28 (d, 3H), 1.51-1.80 (m, 2H), 3.78 (s, 1H), 4.31 (q, 1H), 5.06 (s, 2H), 6.68 (t, 1H), 6.82 (d, 1H), 7.00 (s, 1H), 7.06 (s, 1H), 7.29 (s, 3H), 7.31-7.47 (m, 5H), 8.63 (s, 1H); m/z 380 (M+H)+

1. washwashed with water (10 mL), 2N citric acid (10 mL), saturated aqueous sodium hydrogencarbonate (10 mL) and brine (10 mL)
2. dry with materialdried (MgSO4)
3. filtrationfiltered
4. customevaporated to a gummy residue
5. washwashed with 2N hydrochloric acid (10 mL), water (10 mL), saturated aqueous sodium hydrogencarbonate (10 mL) and brine (10 mL)
6. dry with materialthen dried (MgSO4)
7. filtrationfiltered
8. customevaporated to a foam (900 mg) which
9. customwas used without further purification in the next step