反应详情

To 4-{4-[(7-methoxy-1,2,3,4-tetrahydro-naphthalen-2-yl)-propyl-amino]-butyl}-5-oxo-[1,4]diazepane-1-carboxylic acid tert-butyl ester (800 mg, 1.64 mmol) in methylene chloride (15 mL) was added trifluoroacetic acid (5 mL) in a single portion and the reaction was stirred at room temperature for 30 min. The mixture was concentrated to dryness in-vacuo, dissolved in water (40 mL) and treated with 15% aq. KOH (20 mL). The solution was extracted with ethyl acetate, washed with brine, dried (MgSO4) and concentrated in-vacuo. The free base (636 mg, 1.64 mmol) was taken up in diethyl ether (30 mL) and treated with 1M HCl in ether (3.3 mL). The solid was collected and dried under vacuum to afford 732 mg of 4-{4-[(7-methoxy-1,2,3,4-tetrahydro-naphthalen-2-yl)-propyl-amino]-butyl}-[1,4]diazepan-5-one 5 as a dihydrochloride salt. MS: 374([M+H]+).

1. concentrationThe mixture was concentrated to dryness in-vacuo
2. dissolutiondissolved in water (40 mL)
3. additiontreated with 15% aq. KOH (20 mL)
4. extractionThe solution was extracted with ethyl acetate
5. washwashed with brine
6. dry with materialdried (MgSO4)
7. concentrationconcentrated in-vacuo
8. customThe solid was collected
9. customdried under vacuum