反应详情

Heat a mixture of (S)-tert-butyl 5-[(3,5-bistrifluoromethylbenzyl)cyanoamino]-7-methyl-8-trifluoromethyl-2,3,4,5-tetrahydrobenzo[b]azepine-1-carboxylate (2.0 g, 3.36 mmol), triethylamine hydrochloride (694 mg, 5.04 mmol) and sodium azide (328 mg, 5.04 mmol) in anhydrous toluene (20 mL) at reflux under nitrogen for 12 h. Dilute the cooled mixture with ethyl acetate (100 mL) and wash with 2 N HCl (2×50 mL), water (50 mL) and brine (50 mL) and dry over anhydrous sodium sulfate. Filter and remove the solvent under reduced pressure to provide the title compound as an off-white foam (2.12 g, >99%), which is used in the next step without purification. ESI MS m/z 637 (M−H)−.

1. temperatureHeat
2. temperatureat reflux under nitrogen for 12 h
3. washwash with 2 N HCl (2×50 mL), water (50 mL) and brine (50 mL)
4. dry with materialdry over anhydrous sodium sulfate
5. filtrationFilter
6. customremove the solvent under reduced pressure