4-Methylmorpholine → HCID 21074905, compound

HRID 1171458Notes

Reaction equation

[NH2:1][C@H:2]1[CH2:8][CH2:7][C@@H:6]2[CH2:9][C@H:3]1[C:4](=[O:17])[N:5]2[C:10]([O:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[O:11].[C:18]([NH:28][C@H:29]([C:34](O)=[O:35])[CH2:30][CH2:31][S:32][CH3:33])([O:20][CH2:21][C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1)=[O:19].CN1CCOCC1.F[P-](F)(F)(F)(F)F.N1(O[P+](N(C)C)(N(C)C)N(C)C)C2C=CC=CC=2N=N1>CN(C=O)C>[CH2:21]([O:20][C:18]([NH:28][C@@H:29]([CH2:30][CH2:31][S:32][CH3:33])[C:34]([NH:1][C@H:2]1[CH2:8][CH2:7][C@@H:6]2[CH2:9][C@H:3]1[C:4](=[O:17])[N:5]2[C:10]([O:12][C:13]([CH3:14])([CH3:16])[CH3:15])=[O:11])=[O:35])=[O:19])[C:22]1[CH:23]=[CH:24][CH:25]=[CH:26][CH:27]=1

Participants

Conditions

Temperature: 0 °C

Procedure

A solution of (1R,2S,5R)-tert-butyl 2-amino-7-oxo-6-aza-bicyclo[3.2.1]octane-6-carboxylate (2.5 g) was dissolved in DMF (34 mL) and cooled to 0° C. prior to the addition of N-Cbz methionine (5.3 g), 4-methyl morpholine (3.7 g), and BOP (8.3 g). The reaction was stirred for 12 h at RT and then partitioned between EtOAc and 1N HCl solution. The organic phases were combined, washed with saturated NaHCO3 and brine, dried (MgSO4), filtered, and concentrated in vacuo. The residue was purified by flash chromatography to afford (1R,2S,5R)-tert-butyl 2-((S)-2-(benzyloxycarbonylamino)-4-(methylthio)butanamido)-7-oxo-6-aza-bicyclo[3.2.1]octane-6-carboxylate (5.1 g). MS found: (M+H)+=506.2.

Workup

custompartitioned between EtOAc and 1N HCl solution
washwashed with saturated NaHCO3 and brine
dry with materialdried (MgSO4)
filtrationfiltered
concentrationconcentrated in vacuo
customThe residue was purified by flash chromatography

Sources & evidence

ORD record: ord-9850ec62580e4e14a3a5e11c23f4789c
Source dataset: uspto-grants-2010_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07829571B2

Reaction notes

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