反应详情

DBU (0.030 mL, 0.21 mmol) was added to a solution or 3-{5-[4-(4-bromo-2-fluorophenylamino)-1,5-dimethyl-6-oxo-1,6-dihydro-pyridin-3-yl]-tetrazol-1-yl}-propionitrile (30 mg, 0.069 mmol) in methylene chloride (1.5 mL). After 2 hours, the reaction mixture was diluted with ethyl acetate and washed with 1 N HCl. The aqueous layer was extracted with ethyl acetate. The combined organic extracts were washed with brine, dried (MgSO4) and concentrated under reduced pressure. Trituration with diethyl ether gave clean desired product (20 mg, 77%); MS APCI (−) m/z 377, 379 (M−, Br pattern) detected: 1H NMR (400 MHz, CD3OD) δ 8.20 (s, 1H) 7.29 (dd, 1H), 7.13 (dd, 1H), 6.63 (t, 1H), 3.65 (s, 3H), 1.91 (s, 3H).

1. washwashed with 1 N HCl
2. extractionThe aqueous layer was extracted with ethyl acetate
3. washThe combined organic extracts were washed with brine
4. dry with materialdried (MgSO4)
5. concentrationconcentrated under reduced pressure