[CH:1]1([C:4]2[N:9]=[C:8]([NH:10]C(=O)C(C)(C)C)[CH:7]=[CH:6][CH:5]=2)[CH2:3][CH2:2]1.Cl>O1CCOCC1.C(OCC)(=O)C>[CH:1]1([C:4]2[N:9]=[C:8]([NH2:10])[CH:7]=[CH:6][CH:5]=2)[CH2:3][CH2:2]1To a solution of N-(6-cyclopropylpyridin-2-yl)pivalamide (4.25 gm, 19.49 mmol) in dioxane (34 ml) was added 9N HCl (34 ml). The mixture was stirred for 18 hours at 90° C. After cooling to 25° C., the pH of the reaction was adjusted with to achieve pH-9. The solution was diluted with ethyl acetate (200 ml) quantity and washed with saturated sodium bicarbonate. Next, the organic portion was dried over sodium sulfate and concentrated to get 2 gm (77.5% yield) clear oil.
Wird geladen…
