Ethyl bromoacetate → Ethyl [7-(5-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-1,2,4,5-tetrahydro-3H-3-benzazepin-3-yl]acetate

HRID 1514211Notes

Reaction equation

HRID 1514211 reaction equation
Cl.[Cl:2][C:3]1[CH:4]=[C:5]([C:13]2[O:17][N:16]=[C:15]([C:18]3[CH:28]=[CH:27][C:21]4[CH2:22][CH2:23][NH:24][CH2:25][CH2:26][C:20]=4[CH:19]=3)[N:14]=2)[CH:6]=[CH:7][C:8]=1[O:9][CH:10]([CH3:12])[CH3:11].Br[CH2:30][C:31]([O:33][CH2:34][CH3:35])=[O:32].C(=O)([O-])[O-].[Cs+].[Cs+]>CN(C=O)C.C(OCC)C>[Cl:2][C:3]1[CH:4]=[C:5]([C:13]2[O:17][N:16]=[C:15]([C:18]3[CH:28]=[CH:27][C:21]4[CH2:22][CH2:23][N:24]([CH2:30][C:31]([O:33][CH2:34][CH3:35])=[O:32])[CH2:25][CH2:26][C:20]=4[CH:19]=3)[N:14]=2)[CH:6]=[CH:7][C:8]=1[O:9][CH:10]([CH3:12])[CH3:11]

Participants

6

Reactant 3

HCID 7748Ethyl bromoacetateHCID 10796Cesium carbonateHCID 684687897-(5-{3-Chloro-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-2,3,4,5-tetrahydro-1H-3-benzazepine hydrochloride

Product 1

HCID 59403517Ethyl [7-(5-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-1,2,4,5-tetrahydro-3H-3-benzazepin-3-yl]acetateYield 67.2%

Reagents, catalysts & solvents 2

HCID 3283Diethyl EtherSolventHCID 6228DimethylformamideSolvent

Procedure

7-(5-{3-Chloro-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-2,3,4,5-tetrahydro-1H-3-benzazepine hydrochloride (Example 17) (100 mg, 0.238 mmol), ethyl bromoacetate (0.043 ml, 0.391 mmol) and cesium carbonate (170 mg, 0.521 mmol) were stirred at room temperature in DMF for 5 hours. The reaction mixture was diluted with diethyl ether (˜20 ml) and washed with water (2ט20 ml), the organic layer was passed through a phase separating cartridge to dry and concentrated in vacuo to yield the title compound (77 mg, 0.16 mmol, 60% yield) as a yellow oil. δH (d6DMSO, 400 MHz): 8.19 (1H, s), 8.11 (1H, dd), 7.81-7.85 (2H, m), 7.45 (1H, d), 7.34 (1H, d), 4.89 (1H, sept), 4.07 (2H, q) 3.42 (2H, s), 3.00-291 (4H, m), 2.77-2.72 (4H, m), 1.36 (6H, d), 1.19 (3H, t). MS (ES): C25H2835ClN3O4 requires 469; found 470 [M+H]+.

Workup

  1. washwashed with water (2ט20 ml)
  2. customseparating cartridge
  3. customto dry
  4. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-33d71c75c51f4b9c9e5241366ab271c6
Source dataset
uspto-grants-2012_07
Patent number
US08222245B2

Reaction notes

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