Trifluoroacetic acid → (2S,5R)-6-(benzyloxy)-2-(3-(piperidin-4-yl)-1,2,4-oxadiazol-5-yl)-1,6-diaza-bicyclo[3.2.1]octan-7-one

HRID 1406873Notes

Reaction equation

HRID 1406873 reaction equation
C(O)(C(F)(F)F)=O.[CH2:8]([O:15][N:16]1[C:22](=[O:23])[N:21]2[CH2:24][C@H:17]1[CH2:18][CH2:19][C@H:20]2[C:25]1[O:29][N:28]=[C:27]([CH:30]2[CH2:35][CH2:34][N:33](C(OC(C)(C)C)=O)[CH2:32][CH2:31]2)[N:26]=1)[C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=1>C(Cl)Cl>[CH2:8]([O:15][N:16]1[C:22](=[O:23])[N:21]2[CH2:24][C@H:17]1[CH2:18][CH2:19][C@H:20]2[C:25]1[O:29][N:28]=[C:27]([CH:30]2[CH2:35][CH2:34][NH:33][CH2:32][CH2:31]2)[N:26]=1)[C:9]1[CH:10]=[CH:11][CH:12]=[CH:13][CH:14]=1

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 86700691HCID 86700691, compound

Product 1

HCID 86700692(2S,5R)-6-(benzyloxy)-2-(3-(piperidin-4-yl)-1,2,4-oxadiazol-5-yl)-1,6-diaza-bicyclo[3.2.1]octan-7-oneYield 143.4%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

CF3COOH (4 mL) was added to the solution of tert-butyl 4-(5-((2S,5R)-6-(benzyloxy)-7-oxo-1,6-diaza-bicyclo[3.2.1]octan-2-yl)-1,2,4-oxadiazol-3-yl)piperidine-1-carboxylate (960 mg, 2.0 mmol) in 16 mL of CH2Cl2 at 0° C. The mixture was stiffed at 0° C. for 2 hrs, then concentrated to give (2S,5R)-6-(benzyloxy)-2-(3-(piperidin-4-yl)-1,2,4-oxadiazol-5-yl)-1,6-diaza-bicyclo[3.2.1]octan-7-one (1.1 g) as a brown oil, which was used directly in the next step. ESI-MS (EI+, m/z): 384.2 [M+H]+.

Workup

  1. concentrationconcentrated

Sources & evidence

ORD record
ord-3aad9f44c26745329305f1ff14a30788
Source dataset
uspto-grants-2014_12
Patent number
US08916709B2

Reaction notes

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