Nitromethane → 1-Butoxy-4-((E)-2-nitro-vinyl)-benzene

HRID 77976

Reaction equation

HRID 77976 reaction equation
[CH2:1]([O:5][C:6]1[CH:13]=[CH:12][C:9]([CH:10]=O)=[CH:8][CH:7]=1)[CH2:2][CH2:3][CH3:4].[N+:14]([CH3:17])([O-:16])=[O:15].C([O-])(=O)C.[NH4+]>C(O)(=O)C>[CH2:1]([O:5][C:6]1[CH:13]=[CH:12][C:9](/[CH:10]=[CH:17]/[N+:14]([O-:16])=[O:15])=[CH:8][CH:7]=1)[CH2:2][CH2:3][CH3:4]

Participants

5

Reactant 3

HCID 6375NitromethaneHCID 798134-ButoxybenzaldehydeHCID 517165Ammonium Acetate

Product 1

HCID 62679031-Butoxy-4-((E)-2-nitro-vinyl)-benzeneYield 76%

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

Conditions

Temperature
100 °C

Procedure

A mixture of 4-butoxy-benzaldehyde (4.72 g, 26.5 mmol) described in Manufacturing Example 67-1-1, nitromethane (2.85 mL, 53 mmol), ammonium acetate (3.06 g, 39.8 mmol) and acetic acid (40 mL) was stirred for 13 hours at 100° C. This mixture was cooled to room temperature, concentrated under a reduced pressure, and diluted with ethyl acetate. The organic layer was washed with water and saturated aqueous sodium chloride, dried over anhydrous magnesium sulfate, and filtered. The filtrate was concentrated under a reduced pressure, and the residue was purified by silica gel column chromatography (heptane:ethyl acetate=4:1-1:1) to obtain the title compound (4.44 g, 76%).

Workup

  1. temperatureThis mixture was cooled to room temperature
  2. concentrationconcentrated under a reduced pressure
  3. additiondiluted with ethyl acetate
  4. washThe organic layer was washed with water and saturated aqueous sodium chloride
  5. dry with materialdried over anhydrous magnesium sulfate
  6. filtrationfiltered
  7. concentrationThe filtrate was concentrated under a reduced pressure
  8. customthe residue was purified by silica gel column chromatography (heptane:ethyl acetate=4:1-1:1)

Sources & evidence

ORD record
ord-b967ff8d1d954a9fbb72e99a5a4b2299
Source dataset
uspto-grants-2014_09
Patent number
US08841327B2

Linked notes

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