反应详情

Trifluoroacetic acid (821 μL, 10.56 mmol, 15.0 eq) is added at 0° C. to a stirred solution of [trans-4-(8-methoxy-1,2-dihydro-3-oxa-5,9-diaza-cyclopenta[a]naphthalen-2-ylmethyl)-cyclohexyl]-carbamic acid tert-butyl ester (300 mg, 0.70 mmol, 1.0 eq) in dichloromethane (12 mL). After 2 hours stirring at room temperature, the reaction mixture is extracted with dichloromethane (3×10 mL) and water (10 mL) and the pH is adjusted to 12 by the addition of a 1N sodium hydroxide aqueous solution. The combined organic layers are dried over sodium sulfate, filtered and concentrated to afford trans-4-(8-methoxy-1,2-dihydro-3-oxa-5,9-diaza-cyclopenta[a]naphthalen-2-ylmethyl)-cyclohexylamine as an orange viscous oil (190 mg, 82% yield).

1. extractionthe reaction mixture is extracted with dichloromethane (3×10 mL) and water (10 mL)
2. additionthe pH is adjusted to 12 by the addition of a 1N sodium hydroxide aqueous solution
3. dry with materialThe combined organic layers are dried over sodium sulfate
4. filtrationfiltered
5. concentrationconcentrated