反应详情

6-[(2'-Methoxy-4-biphenylyl)carbonyl]-2-methyl-1,4,5,6-tetrahydroimidazo[4,5-d][1]benzazepine was dissolved in 4.8 ml of ethyl alcohol, the solution was mixed with 0.44 ml of 4N hydrochloric acid-ethyl acetate and cooled on an ice bath to effect crystal formation, and then the thus formed crystals were collected by filtration and washed with a small volume of ethyl alcohol to obtain 260 mg of 6-[(2'-methoxy-4-biphenylyl)carbonyl]-2-methyl-1,4,5,6-tetrahydroimidazo[4,5-d][1]benzazepine hydrochloride (Example 33(2)).

1. temperaturecooled on an ice bath to effect crystal formation
2. filtrationthe thus formed crystals were collected by filtration
3. washwashed with a small volume of ethyl alcohol