反应详情

Benz[d]indeno[1,2-b]pyran-5,11-dione (4d) (0.150 g, 0.604 mmol) was treated with hydrazine (0.255 g, 7.964 mmol) in CHCl3 (50 mL) and the reaction mixture was heated at reflux for 16 h. The reaction mixture was allowed to cool to room temperature, diluted with CHCl3 (150 mL), and washed with sat NaHCO3 (2×50 mL). The solution was dried over sodium sulfate and concentrated to provide a red-orange solid (0.120 g, 76%): mp 272-274° C. IR (film) 3448, 3305, 1686, 1663, 1610, 1507, 1312, 762 cm−1; 1H NMR (CDCl3) δ 8.54 (d, J=7.8 Hz, 1H), 8.51 (d, J=7.2 Hz, 1H), 8.24 (d, J=7.4 Hz, 1H), 7.85 (m, 1H), 7.60-7.45 (m, 4H), 6.19 (s, 2H); EIMS m/z (rel intensity) 262 (M+, 100). Anal. (C16H10N2O2.0.25H2O) C, H, N.

1. temperaturethe reaction mixture was heated
2. temperatureat reflux for 16 h
3. washwashed
4. dry with materialThe solution was dried over sodium sulfate
5. concentrationconcentrated