反应详情

温度

90 °C

To 1-(2,3-dihydrobenzofuran-5-yl)-N-(2′-methoxy-3-methyl-2,3′-bipyridin-6-yl)cyclopropanecarboxamide (87 mg, 0.2 mmol) in 1,4-dioxane (1 mL) was added 0.5 mL of an aqueous 4 M hydrochloric acid solution. The reaction mixture was heated to 90° C. for 30 minutes before being quenched with triethlyamine (0.5 mL) and evaporated to dryness. The residue was dissolved in N,N-dimethylformamide (1 mL) and purified by reverse-phase preparative liquid chromatography. The resulting trifluoroacetic acid salt was dissolved in dichloromethane (5 mL) and washed with a saturated sodium bicarbonate solution. The organics were dried over sodium sulfate and evaporated to dryness to yield the product (27 mg, 32%) ESI-MS m/z calc. 387.43. found 388.5 (M+1)+. Retention time 1.23 minutes. 1H NMR (400 MHz, DMSO-d6) δ 11.81 (s, 1H), 8.02 (s, 1H), 7.94 (d, J=8.3 Hz, 1H), 7.62 (d, J=8.4 Hz, 1H), 7.45 (m, 1H), 7.37-7.35 (m, 2H), 7.24 (m, 1H), 6.80 (d, J=8.2 Hz, 1H), 6.24 (m, 1H), 4.54 (t, J=8.7 Hz, 2H), 3.19 (t, J=8.7 Hz, 2H), 2.07 (s, 3H), 1.50-1.47 (m, 2H), 1.11-1.08 (m, 2H).

1. custombefore being quenched with triethlyamine (0.5 mL)
2. customevaporated to dryness
3. dissolutionThe residue was dissolved in N,N-dimethylformamide (1 mL)
4. custompurified by reverse-phase preparative liquid chromatography
5. dissolutionThe resulting trifluoroacetic acid salt was dissolved in dichloromethane (5 mL)
6. washwashed with a saturated sodium bicarbonate solution
7. dry with materialThe organics were dried over sodium sulfate
8. customevaporated to dryness