反应详情

To a suspension of 8-chloro-3-methoxy-2,5-dioxo-2,5-dihydro-1H-benz[b]azepine (3.00 g) in glacial acetic acid (250 mL) was added sodium acetate (2.07 g) followed by iodine monochloride (15.2 mL). The mixture was heated to reflux for 1.5 hours, was allowed to cool, and the acetic acid was evaporated from the reaction mixture. The solid residue was suspended in tetrahydrofuran and stirred for 15 minutes. The solution was filtered and the resulting filtrate evaporated. The yellowish solid was recrystallized from refluxing toluene (700 mL) to afford the title compound (3.8 g); 250 MHz NMR: 11.60 (broad s, 1), 7.59 (d,1, J=7.1), 7.30 (d,1, J=1.4), 7.23 (dd,1, J=7.1, 1.6), 3.90 (s,3). Analysis for C11H7ClINO3 : Calculated: C, 36.34; H, 1.94; N, 3.85; Found: C, 36.35, H, 1.87; N, 3.82.

1. temperatureThe mixture was heated
2. temperatureto reflux for 1.5 hours
3. temperatureto cool
4. customthe acetic acid was evaporated from the reaction mixture
5. filtrationThe solution was filtered
6. customthe resulting filtrate evaporated
7. customThe yellowish solid was recrystallized
8. temperaturefrom refluxing toluene (700 mL)