反应详情

To a stirred suspension of Compound Formula (II) (98.0 g, 190 mmol) in ethanol (2.0 L) was added 1.044 M Sodium hydroxide in water (199 mL). The resultant homogeneous solution was stirred for 1 hour, during which time a thick precipitate formed. The product was collected by filtration, and washed with ethanol (0.5 L) and diethyl ether (1.0 L). The resultant solid was dried in vacuo at 60-70° C. for 4 days to provide 88.6 g (86.8%) of compound Formula (I) as a light tan solid, mp 225° C. (decomp). 1H NMR (DMSO-d6) δ 9.86 (s, 1H), 8.60 (s, 1H), 8.29 (d, 1H), 7.79 (dd, 1H), 7.60 (br s, 1H), 7.40 (dd, 1H), 7.29 (d, 1H), 7.25-7.15 (m, 2H), 6.9 (br s, 2H), 4.9 (br s, 1H), 3.8 (br s, 1H), 3.70 (s, 3H), 3.35 (br s, 3H); MS m/z 519 (M+−Na+H, 100%); CHN Anal. Calcd. for C27H19ClFN4NaO40.33 EtOH1.3H2O: C, 57.33; H, 4.10; N, 9.67. Found C, 57.14; H, 3.99; N, 9.65.

1. customformed
2. filtrationThe product was collected by filtration
3. washwashed with ethanol (0.5 L) and diethyl ether (1.0 L)
4. customThe resultant solid was dried in vacuo at 60-70° C. for 4 days