反应详情

温度

50 °C

To a solution of 2-[5-(1,3,3-trimethyl-6-aza-bicyclo[3.2.1]octane-6-carbonyl)-1H-benzimidazol-2-yl]-cyclopropanecarboxylic acid ethyl ester (60 mg, 0.147 mmol) in 96% ethanol (3 mL) at room temperature under an inert atmosphere of nitrogen was added 1N NaOH (aq) (0.36 mL, 0.36 mmol). The mixture was stirred for 16 hrs at 50° C. The reaction was quenched by the addition of water (3 mL) and acidified to pH 2 with 1N HCl followed by extraction with diethyl ether (2×5 mL). The combined organic phases were washed with water (2×5 mL), brine (5 mL), dried (MgSO4), filtered, and evaporated in vacuo affording 49 mg (88%) of the title compound as a solid. MS-ESI m/z 382; 1H NMR (400 MHz, CDCl3) δ 0.87-1.06 (m, 6H), 1.08-1.20 (m, 4H), 1.30-1.38 (m, 1H), 1.39-1.45 (m) and 1.48-1.64 (m, 3H), 1.70-1.90 (m, 2H), 1.91-2.01 (m, 1H), 2.18-2.30 (m) and 2.43-2.61 (m) and 2.85-3.02 (m, 2H), 3.15 (t) and 3.66 (t, 1H), 3.20-3.34 (m, 1H), 3.88-4.01 (m) and 4.54-4.65 (m, 1H), 7.39-7.50 (m, 1H), 7.69-7.85 (m, 2H).

1. customThe reaction was quenched by the addition of water (3 mL)
2. extractionfollowed by extraction with diethyl ether (2×5 mL)
3. washThe combined organic phases were washed with water (2×5 mL), brine (5 mL)
4. dry with materialdried (MgSO4)
5. filtrationfiltered
6. customevaporated in vacuo