Sodium Azide → trans-Tert-butyl 3-azido-4-(benzyloxycarbonylamino)piperidine-1-carboxylate

HRID 56414Notes

Reaction equation

[CH2:1]([O:8][C:9]([NH:11][C@@H:12]1[CH2:17][CH2:16][N:15]([C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])[CH2:14][C@H:13]1OS(C)(=O)=O)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[N-:30]=[N+:31]=[N-:32].[Na+]>CS(C)=O.C(OCC)(=O)C>[N:30]([C@H:13]1[C@H:12]([NH:11][C:9]([O:8][CH2:1][C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=2)=[O:10])[CH2:17][CH2:16][N:15]([C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])[CH2:14]1)=[N+:31]=[N-:32]

Participants

Conditions

Temperature: 90 °C

Procedure

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]+.

Workup

temperatureThe solution mixture was cooled to ˜30° C.
washwashed with water (700 mL×3) and brine
dry with materialThe organic layer was dried over anhydrous sodium sulfate
filtrationfiltered
concentrationconcentrated to the title compound (3.8 g, 72%) as a yellow oil

Sources & evidence

ORD record: ord-79f9f96f5d834ee9af7cdb8828219a8d
Source dataset: uspto-grants-2016_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09434700B2

Reaction notes

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