反应详情

To a mixture of 1.03 g (27.1 mmol) of lithium aluminum hydride and 20 ml of anhydrous tetrahydrofuran, an anhydrous tetrahydrofuran solution of 2.70 g (9.03 mmol) of 1-benzyloxy-2-methoxy-4-(2-nitropropenyl)benzene was added dropwise under vigorous stirring over about 90 minutes and refluxed for 2 hours by heating. The reaction mixture was cooled and aqueous sodium hydroxide solution was added thereto. After the precipitates were filtered off with celite-precoated glass filter, the solvent was distilled off from the filtrate under reduced pressure. The residue was extracted with ethyl acetate, washed with saturated brine, dried over potassium carbonate and the solvent was distilled off under reduced pressure to give 2.30 g of crude 2-(4-benzyloxy-3-methoxyphenyl)-1-methylethylamine.

1. temperaturerefluxed for 2 hours
2. temperatureby heating
3. temperatureThe reaction mixture was cooled
4. filtrationAfter the precipitates were filtered off with celite-precoated glass
5. filtrationfilter
6. distillationthe solvent was distilled off from the filtrate under reduced pressure
7. extractionThe residue was extracted with ethyl acetate
8. washwashed with saturated brine
9. dry with materialdried over potassium carbonate
10. distillationthe solvent was distilled off under reduced pressure