N-bromobutanimide → HCID 86714164, compound

HRID 919987Notes

Reaction equation

HRID 919987 reaction equation
[CH3:1][O:2][C:3]([C:5]1[C:6]([OH:30])=[C:7]2[C:12](=[CH:13][N:14]=1)[N:11]([C@H:15]([C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1)[CH3:16])[C:10](=[O:23])[C:9]([C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1)=[CH:8]2)=[O:4].[Br:31]N1C(=O)CCC1=O>C(Cl)Cl>[CH3:1][O:2][C:3]([C:5]1[C:6]([OH:30])=[C:7]2[C:12](=[C:13]([Br:31])[N:14]=1)[N:11]([C@H:15]([C:17]1[CH:18]=[CH:19][CH:20]=[CH:21][CH:22]=1)[CH3:16])[C:10](=[O:23])[C:9]([C:24]1[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=1)=[CH:8]2)=[O:4]

Participants

4

Reactant 2

HCID 67184N-bromobutanimideHCID 68297518HCID 68297518, compound

Product 1

HCID 86714164HCID 86714164, compoundYield 65.1%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A mixture of (S)-5-hydroxy-2-oxo-3-phenyl-1-(1-phenyl-ethyl)-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester (100 mg, 0.25 mmol) and N-bromosuccinimide (49 mg, 0.275 mmol) in CH2Cl2 (1 mL) was refluxed for 3 h. Solvent was evaporated in vacuo, and the residue was purified by silica gel chromatography (5-20% EtOAc/hexanes+1% AcOH) to give 78 mg of the title compound. MS: (−) m/z 477.19, 479.21 (M-1, 79/81Br).

Workup

  1. temperaturewas refluxed for 3 h
  2. customSolvent was evaporated in vacuo
  3. customthe residue was purified by silica gel chromatography (5-20% EtOAc/hexanes+1% AcOH)

Sources & evidence

ORD record
ord-ceb4430e664243058acbd434b557fb4d
Source dataset
uspto-grants-2016_03
Patent number
US09271970B2

Reaction notes

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