Dimethylformamide → HCID 76540793, compound

HRID 504778Notes

Reaction equation

HRID 504778 reaction equation
[OH:1][C:2]1[CH:7]=[CH:6][C:5]([NH:8][N:9]=[C:10]([CH3:16])[C:11]([O:13][CH2:14][CH3:15])=[O:12])=[C:4]([N+:17]([O-:19])=[O:18])[CH:3]=1.C(=O)([O-])[O-].[K+].[K+].CN(C)C=O.Br[CH2:32][CH2:33][CH2:34][O:35][CH3:36]>O>[CH3:36][O:35][CH2:34][CH2:33][CH2:32][O:1][C:2]1[CH:7]=[CH:6][C:5]([NH:8][N:9]=[C:10]([CH3:16])[C:11]([O:13][CH2:14][CH3:15])=[O:12])=[C:4]([N+:17]([O-:19])=[O:18])[CH:3]=1

Participants

6

Reactant 4

HCID 6228DimethylformamideHCID 11430Potassium CarbonateHCID 5245511-Bromo-3-methoxypropaneHCID 76540792HCID 76540792, compound

Product 1

HCID 76540793HCID 76540793, compoundYield 42.4%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
60 °C

Procedure

To a mixture of ethyl 2-[(4-hydroxy-2-nitrophenyl)hydrazono]propanoate (6.81 g), potassium carbonate (3.52 g) and N,N-dimethylformamide (100 mL) was added 1-bromo-3-methoxypropane (3.90 g) at 60° C., and the mixture was stirred at 60° C. for 15 hr. Water was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated brine, dried (MgSO4), and concentrated. The obtained residue was subjected to silica gel column chromatography, and eluted with hexane-ethyl acetate (4:1-1:1, volume ratio) to give the title compound (3.67 g, yield 42%) as orange crystals.

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe ethyl acetate layer was washed with saturated brine
  3. dry with materialdried (MgSO4)
  4. concentrationconcentrated
  5. washeluted with hexane-ethyl acetate (4:1-1:1, volume ratio)

Sources & evidence

ORD record
ord-51d166aa19ce43fb9e23b1c68118fae3
Source dataset
uspto-grants-2010_08
Patent number
US07777047B2

Reaction notes

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