反应详情

A solution of toluene-4-sulfonic acid 2-[1-(3-chloro-benzyl)-3-(naphthalene-1-sulfonyl)-1H-indazol-5-yloxy]-ethyl ester (0.415 g, 0.641 mmol) in 2.0 M ethylamine in THF (8.0 mL, 16.0 mmol) was stirred at 70° C. for 3 hours and then at 80° C. for 19 hours. The reaction mixture was allowed to cool to ambient temperature and solvent evaporated. It was partitioned in ethyl acetate and aqueous sodium bicarbonate. The organic phase was washed with brine, dried with magnesium sulfate, filtered and concentrated. Drying in vacuo at 80° C. for 20 minutes resulted in {2-[1-(3-chloro-benzyl)-3-(naphthalene-1-sulfonyl)-1H-indazol-5-yloxy]-ethyl}-ethyl-amine as an orange semi-solid (0.270 g, 81.1%). This was dissolved in chloroform, and ethereal hydrochloride was added. The mixture was concentrated and dried in vacuo at 83° C. for 16 hours. The hydrochloride as a pale orange foam resulted (0.276 g); Mass Spectrum (+EI, [M+H]+) m/z 520. 1HNMR (500 MHz, DMSO-d6): δ8.71-8.77 (m, 3H), 8.55 (dd, 1H, J=7.44 Hz and 1.22 Hz), 8.27 (d, 1H, J=8.29 Hz), 8.02-8.05 (m, 1H), 7.82 (d, 1H, J=9.15 Hz), 7.70-7.74 (m, 1H), 7.57-7.64 (m, 2H), 7.24-7.28 (m, 2H), 7.16-7.21 (m, 3H) 7.05 (d, 1H, J=7.56 Hz), 5.73 (s, 2H), 4.24-4.27 (m, 2H), 3.30-3.32 (m, 2H), 2.97-3.03 (m, 2H), 1.16-1.20 ppm (m, 3H). Elemental Analysis for C28H26ClN3O3S.1.00 HCl.0.60 mole H2O: Calcd: C, 59.28; H, 5.01; N, 7.41; Found: C, 58.95; H, 5.06; N, 7.14.

1. customsolvent evaporated
2. customIt was partitioned in ethyl acetate
3. washThe organic phase was washed with brine
4. dry with materialdried with magnesium sulfate
5. filtrationfiltered
6. concentrationconcentrated
7. customDrying in vacuo at 80° C. for 20 minutes
8. customresulted in {2-[1-(3-chloro-benzyl)-3-(naphthalene-1-sulfonyl)-1H-indazol-5-yloxy]-ethyl}-ethyl-amine as an orange semi-solid (0.270 g, 81.1%)
9. concentrationThe mixture was concentrated
10. customdried in vacuo at 83° C. for 16 hours