Acetic Acid → 5-Methyl-2-(4-((E)-2-nitro-vinyl)-benzyloxy)-pyridine

HRID 1891621Notes

Reaction equation

HRID 1891621 reaction equation
C(O)(=O)C.[CH3:5][C:6]1[CH:7]=[CH:8][C:9]([O:12][CH2:13][C:14]2[CH:21]=[CH:20][C:17]([CH:18]=O)=[CH:16][CH:15]=2)=[N:10][CH:11]=1.[N+:22]([CH3:25])([O-:24])=[O:23].C([O-])(=O)C.[NH4+]>C(OCC)(=O)C.O>[CH3:5][C:6]1[CH:7]=[CH:8][C:9]([O:12][CH2:13][C:14]2[CH:21]=[CH:20][C:17](/[CH:18]=[CH:25]/[N+:22]([O-:24])=[O:23])=[CH:16][CH:15]=2)=[N:10][CH:11]=1

Participants

7

Reactant 4

HCID 176Acetic AcidHCID 6375NitromethaneHCID 517165Ammonium AcetateHCID 592551424-(5-Methyl-pyridin-2-yloxymethyl)-benzaldehyde

Product 1

HCID 592554285-Methyl-2-(4-((E)-2-nitro-vinyl)-benzyloxy)-pyridineYield 100.4%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
100 °C

Procedure

To an acetic acid (20.0 mL) solution of 4-(5-methyl-pyridin-2-yloxymethyl)-benzaldehyde (2.93 g, 12.9 mmol) described in Manufacturing Example 44-1-2 were added nitromethane (3.94 g, 64.5 mmol) and ammonium acetate (1.99 g, 25.8 mmol under nitrogen atmosphere at room temperature, which was stirred for 2.5 hours at 100° C. Water and ethyl acetate were added to the reaction mixture, and the organic layer was extracted with ethyl acetate. This 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 to obtain the title compound (3.50 g) as a crude product.

Workup

  1. extractionthe organic layer was extracted with ethyl acetate
  2. washThis organic layer was washed with water and saturated aqueous sodium chloride
  3. dry with materialdried over anhydrous magnesium sulfate
  4. filtrationfiltered
  5. concentrationThe filtrate was concentrated under a reduced pressure

Sources & evidence

ORD record
ord-3e458e2ade1240f5a45776f78db66850
Source dataset
uspto-grants-2013_08
Patent number
US08507530B2

Reaction notes

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