反应详情

2-{3-[2-(2-Isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-1,3a-diaza-benzo[e]azulen-8-yl]-azetidin-1-yl}-2-methyl-propionitrile (0.17 g, 0.41 mmol) was dissolved in conc. H2SO4, (2 mL) and the mixture allowed to stand at room temperature for 3.25 hr before adding to ice. The resultant solution was basified with Na2CO3, further water added, and the mixture extracted with 10% MeOH in DCM. The combined extracts were dried (Na2SO4), filtered and concentrated in vacuo. The resultant residue was subjected to flash chromatography (SiO2, gradient 0 to 10% MeOH in DCM) to give 205 as a white solid (97 mg, 54%). 1H NMR δ (ppm)(CDCl3): 8.46 (1 H, d, J=8.29 Hz), 7.84 (1 H, s), 7.61 (1 H, s), 7.13 (1 H, s), 7.08 (1 H, d, J=8.39 Hz), 6.95 (1 H, s), 6.01-5.91 (1 H, m), 5.27 (1 H, s), 4.50-4.40 (4 H, m), 3.62 (3 H, s), 3.33 (2 H, s), 1.56 (6 H, d, J=6.63 Hz), 1.23 (6 H, s). LCMS: RT=2.53 min, M+H+=436

1. additionbefore adding to ice
2. additionadded
3. extractionthe mixture extracted with 10% MeOH in DCM
4. dry with materialThe combined extracts were dried (Na2SO4)
5. filtrationfiltered
6. concentrationconcentrated in vacuo