反应详情

2-{[[4-(1,3-Dioxo-1,3-dihydro-isoindol-2-yl)-butyl]-(5,6,7,8-tetrahydro-quinolin-8-yl)-amino]-methyl}-4,5,6,7-tetrahydro-benzoimidazole-1-sulfonic acid (0.4564 g, 0.77 mmol) and 2 N HCl (7.5 mL) were stirred at reflux for 23 hours. The reaction mixture was cooled to room temperature and 15% (w/v) aqueous NaOH (5 mL) was added. The aqueous layer was extracted with CH2Cl2 (3×150 mL), and the combined organic extracts were washed with brine (1×100 mL), dried (Na2SO4), and concentrated. 0.2466 g (64%) of the crude 2-{4-[(4,5,6,7-tetrahydro-1H-benzoimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amino]-butyl}-isoindole-1,3-dione was isolated as a pale yellow foam. 1H NMR (CDCl3) δ 1.37-1.39 (m, 2H), 1.79-1.88 (m, 10H), 1.98-2.11 (m, 2H), 2.51-2.63 (m, 8H), 3.50-3.52 (m, 1H), 3.66-3.86 (m, 2H), 3.97-3.99 (m, 1H), 7.02-7.11 (m, 2H), 7.37-7.40 (m, 2H), 7.68-7.71 (m, 1H), 7.80-7.82 (m, 1H), 8.44-8.46 (m, 1H).

1. temperatureat reflux for 23 hours
2. extractionThe aqueous layer was extracted with CH2Cl2 (3×150 mL)
3. washthe combined organic extracts were washed with brine (1×100 mL)
4. dry with materialdried (Na2SO4)
5. concentrationconcentrated