Reaktion #84692

Reaktionsgleichung

trans-tert-butyl 4-(benzyloxycarbonylamino)-3-(methylsulfonyloxy)piperidine-1-carboxylate

sodium azide

→

trans-tert-butyl 3-azido-4-(benzyloxycarbonylamino)piperidine-1-carboxylate

Lösungsmittel

ethyl acetate

dimethyl sulfoxide

Reaktionsbedingungen

Aufarbeitung

1. 1
   TemperaturThe solution mixture was cooled to ˜30° C.
2. 2
   Waschenwashed with water (700 mL×3) and brine
3. 3
   TrocknenThe organic layer was dried over anhydrous sodium sulfate
4. 4
   Filtrationfiltered
5. 5
   Einengenconcentrated to the title compound (3.8 g, 72%) as a yellow oil

Vorschrift

To a solution of trans-tert-butyl 4-(benzyloxycarbonylamino)-3-(methylsulfonyloxy)piperidine-1-carboxylate (6.0 g, 14 mmol) in dimethyl sulfoxide (40 mL) was added sodium azide (9.11 g, 140 mmol), and the reaction mixture was stirred at 90° C. overnight under N2. The solution mixture was cooled to ˜30° C., diluted with ethyl acetate (˜300 mL), and washed with water (700 mL×3) and brine. The organic layer was dried over anhydrous sodium sulfate, filtered and concentrated to the title compound (3.8 g, 72%) as a yellow oil. MS (ES+) C18H25N5O4 requires: 375, found: 276 [M+H−100]+, 373 [M+Na]+.

Quelle