反应详情

A stirred suspension of the product of Example 77 (353 mg) in methanol (5 ml) was treated with a 1 molar sodium hydroxide solution (3 ml). After 2 hours, the cream coloured solid was collected, washed with a little methanol and dried to give the title compound, 240 mg, m.p.>300° C.; NMR (d6DMSO) δ 8.15 (2H, d), 8.05 (4H, t, AB pattern), 6.85 (2H, d), 3.97 (2H, s), 3.38 (4H, t), 2.65 (4H, t), m/e 348 (M+H)+ ; calculated for C18H18N3NaO3. 0.25H2O: C, 61.4; H, 5.3; N, 11.9. found: C, 61.3; H, 5.2; N, 11.7%.

1. customwas collected
2. washwashed with a little methanol
3. customdried