反应详情

A mixture of 2-(4-phenoxybutyl)1H-isoindole-1,3(2H)-dione (10.10 g, 3.27 mmol) and 25% hydrazine solution in water (2.88 ml, 13.10 mmol) in EtOH (30 ml) was warmed at reflux. After 1.5 h, EtOAc was added and the mixture was extracted with brine. The combined aqueous phases were then re-extracted with EtOAc and all the organic phases combined. These were then extracted with 1N HCl, the acidic aqueous phases combined, basified with 2N NaOH and re-extracted into EtOAc before evaporating to dryness to give the title compound (0.411 mg, 67%) as an oil. 1H NMR (500 MHz CDCl3): δ 7.32-2.26 (m, 2H), 6.95 (t, 1H), 4.00 (t, 2H), 2.80 (t, 2H), 1.90-1.82 (m, 2H), 1.68-1.62 (m, 2H).

1. temperaturewas warmed
2. temperatureat reflux
3. extractionthe mixture was extracted with brine
4. extractionThe combined aqueous phases were then re-extracted with EtOAc and all the organic phases
5. extractionThese were then extracted with 1N HCl
6. extractionre-extracted into EtOAc
7. custombefore evaporating to dryness