Cesium carbonate → 2-[[2-(2-Propan-2-yl-1,2,4-triazol-3-yl)-5,6-dihydroimidazo[1,2-d][1,4]benzoxazepin-9-yl]oxy]acetamide

HRID 886437Notes

Reaction equation

HRID 886437 reaction equation
[CH:1]([N:4]1[C:8]([C:9]2[N:18]=[C:17]3[N:11]([CH2:12][CH2:13][O:14][C:15]4[CH:22]=[C:21]([OH:23])[CH:20]=[CH:19][C:16]=43)[CH:10]=2)=[N:7][CH:6]=[N:5]1)([CH3:3])[CH3:2].Br[CH2:25][C:26]([NH2:28])=[O:27].C(=O)([O-])[O-].[Cs+].[Cs+]>CN(C=O)C.O>[CH:1]([N:4]1[C:8]([C:9]2[N:18]=[C:17]3[C:16]4[CH:19]=[CH:20][C:21]([O:23][CH2:25][C:26]([NH2:28])=[O:27])=[CH:22][C:15]=4[O:14][CH2:13][CH2:12][N:11]3[CH:10]=2)=[N:7][CH:6]=[N:5]1)([CH3:3])[CH3:2]

Participants

6

Reactant 3

HCID 10796Cesium carbonateHCID 696322-BromoacetamideHCID 1360309202-(2-isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-1,3a-diaza-benzo[e]azulen-8-ol

Product 1

HCID 582047592-[[2-(2-Propan-2-yl-1,2,4-triazol-3-yl)-5,6-dihydroimidazo[1,2-d][1,4]benzoxazepin-9-yl]oxy]acetamideYield 64%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

To a solution of 2-(2-isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-1,3a-diaza-benzo[e]azulen-8-ol 490 (80 mg, 0.26 mmol) in DMF (3 mL) was added 2-bromoacetamide (53 mg, 0.39 mmol) and cesium carbonate (109 mg, 0.33 mmol). The reaction mixture stirred at RT for 16 h before being diluted with water. The mixture was extracted with ethyl acetate (3×10 mL) and the combined organic extracts, washed with brine, dried (MgSO4) and concentrated in vacuo. The residue was subjected to flash chromatography (SiO2, gradient 0-10% methanol in DCM) to yield 428 as a white solid (61 mg, 64%). LCMS: RT=6.70 min, [M+H]+=369; 1H NMR (400 MHz, d6-DMSO) 8.28 (1H, d, J=9.8 Hz), 7.85 (1H, s), 7.82 (1H, s), 7.51 (1H, s), 7.35 (1H, s), 6.76 (1H, dd, J=9.8, 2.7 Hz), 6.54 (1H, d, J=2.7 Hz), 5.85 (1H, sept, J=6.6 Hz), 4.49-4.39 (6H, m), 1.43 (6H, d, J=6.6 Hz).

Workup

  1. extractionThe mixture was extracted with ethyl acetate (3×10 mL)
  2. washthe combined organic extracts, washed with brine
  3. dry with materialdried (MgSO4)
  4. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-c0ec939407584b109aabfd9a38e515e9
Source dataset
uspto-grants-2012_08
Patent number
US08242104B2

Reaction notes

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