反应详情

In dimethoxyethane (100 ml) was dissolved t-butyl 7-(4-ethoxyphenyl)-1-methyl-2,3-dihydro-1-benzazepine-4-carboxylate (4.0 g), and to the mixture was added 6N hydrochloric acid (25 ml). The mixture was refluxed for 3 hours, and the solvent was evaporated. Precipitated yellow powder was filtered and washed with ethyl acetate-hexane to give 7-(4-ethoxyphenyl)-1-methyl-2,3-dihydro-1-benzazepine-4-carboxylic acid hydrochloride (3.8 g).

1. temperatureThe mixture was refluxed for 3 hours
2. customthe solvent was evaporated
3. customPrecipitated yellow powder
4. filtrationwas filtered
5. washwashed with ethyl acetate-hexane