Sodium Iodide → (S)-tert-butyl 5-((6-bromo-2-methoxynaphthalen-1-yl)methyl)-4-oxo-2,3,4,5-tetrahydrobenzo[b][1,4]oxazepin-3-ylcarbamate

HRID 1055474Notes

Reaction equation

HRID 1055474 reaction equation
[O:1]=[C:2]1[C@@H:8]([NH:9][C:10](=[O:16])[O:11][C:12]([CH3:15])([CH3:14])[CH3:13])[CH2:7][O:6][C:5]2[CH:17]=[CH:18][CH:19]=[CH:20][C:4]=2[NH:3]1.[Br:21][C:22]1[CH:23]=[C:24]2[C:29](=[CH:30][CH:31]=1)[C:28]([CH2:32]Cl)=[C:27]([O:34][CH3:35])[CH:26]=[CH:25]2.C([O-])([O-])=O.[Cs+].[Cs+].[Na+].[I-]>CN(C=O)C.O>[Br:21][C:22]1[CH:23]=[C:24]2[C:29](=[CH:30][CH:31]=1)[C:28]([CH2:32][N:3]1[C:2](=[O:1])[C@@H:8]([NH:9][C:10](=[O:16])[O:11][C:12]([CH3:15])([CH3:14])[CH3:13])[CH2:7][O:6][C:5]3[CH:17]=[CH:18][CH:19]=[CH:20][C:4]1=3)=[C:27]([O:34][CH3:35])[CH:26]=[CH:25]2

Participants

7

Reactant 4

HCID 5238Sodium IodideHCID 10796Cesium carbonateHCID 7371226-Bromo-1-(chloromethyl)-2-methoxynaphthaleneHCID 18599719(S)-tert-Butyl (4-oxo-2,3,4,5-tetrahydrobenzo[b][1,4]oxazepin-3-yl)carbamate

Product 1

HCID 118574202(S)-tert-butyl 5-((6-bromo-2-methoxynaphthalen-1-yl)methyl)-4-oxo-2,3,4,5-tetrahydrobenzo[b][1,4]oxazepin-3-ylcarbamateYield 67.5%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

A mixture of (S)-tert-butyl 4-oxo-2,3,4,5-tetrahydrobenzo[b][1,4]oxazepin-3-ylcarbamate (1.412 g, 5.07 mmol), 6-bromo-1-(chloromethyl)-2-methoxynaphthalene (1.59 g, 5.58 mmol), Cs2CO3 (1.98 g, 6.09 mmol), and NaI (913 mg, 6.09 mmol) in DMF (16.9 mL) was stirred at RT for 22 h, diluted with H2O and extracted with EtOAc. The combined extracts were washed with brine, dried over Na2SO4 and. The filtrate was concentrated to give a residue that was purified by silica gel chromatography to give (S)-tert-butyl 5-((6-bromo-2-methoxynaphthalen-1-yl)methyl)-4-oxo-2,3,4,5-tetrahydrobenzo[b][1,4]oxazepin-3-ylcarbamate (1.804 g, 67%) as an off-white solid. MS m/z 549/551 (MNa)+

Workup

  1. extractionextracted with EtOAc
  2. washThe combined extracts were washed with brine
  3. dry with materialdried over Na2SO4
  4. concentrationThe filtrate was concentrated
  5. customto give a residue that
  6. customwas purified by silica gel chromatography

Sources & evidence

ORD record
ord-cece7f89ecff4a5880f9791f99cc8966
Source dataset
uspto-grants-2016_07
Patent number
US09394263B2

Reaction notes

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