反应详情

温度

130 °C

A mixture of methyl 12-methoxy-5,6-dihydrobenzo[a]acridine-11-carboxylate (20 mg, 0.06 mmol) and hydrazine hydrate (0.5 mL) in DMA (0.8 mL) was heated at 130° C. for 4 h. The reaction mixture was cooled, treated with ethyl acetate (0.5 mL), water (1 mL) and brine (1 mL). The resulting precipitate was collected by filtration, dissolved in a mixture of methanol:dichloromethane (1:8, 10 mL), dried over Na2SO4, filtered, concentrated, chromatographed on silica gel using gradint eluant of 0-3.2% methanol in dichloromethane to give the desired compound as a yellow solid (7 mg, 39%). 1H NMR (DMSO-d6) δ11.85 (s, 1H), 10.88 (s, 1H), 8.77-8.78 (m, 1H), 7.66-7.68 (m, 1H), 7.56-7.57 (m, 1H), 7.35-7.37 (m, 1H), 7.19-7.20 (m, 2H), 7.09-7.11 (m, 1H), 2.83-2.85 (m, 2H), 2.66-2.69 (m, 2H). MS (ESI) m/e [M+1]+288.

1. temperatureThe reaction mixture was cooled
2. filtrationThe resulting precipitate was collected by filtration
3. dissolutiondissolved in a mixture of methanol:dichloromethane (1:8, 10 mL)
4. dry with materialdried over Na2SO4
5. filtrationfiltered
6. concentrationconcentrated
7. customchromatographed on silica gel using gradint eluant of 0-3.2% methanol in dichloromethane