Nitromethane → 2-(4-((E)-Nitro-vinyl)-phenoxymethyl)-pyridine

HRID 78224

Reaction equation

HRID 78224 reaction equation
[N:1]1[CH:6]=[CH:5][CH:4]=[CH:3][C:2]=1[CH2:7][O:8][C:9]1[CH:16]=[CH:15][C:12]([CH:13]=O)=[CH:11][CH:10]=1.[N+:17]([CH3:20])([O-:19])=[O:18].C([O-])(=O)C.[NH4+]>C(O)(=O)C>[N+:17](/[CH:20]=[CH:13]/[C:12]1[CH:15]=[CH:16][C:9]([O:8][CH2:7][C:2]2[CH:3]=[CH:4][CH:5]=[CH:6][N:1]=2)=[CH:10][CH:11]=1)([O-:19])=[O:18]

Participants

5

Reactant 3

HCID 6375NitromethaneHCID 517165Ammonium AcetateHCID 7596674-(Pyridin-2-ylmethoxy)benzaldehyde

Product 1

HCID 592551952-(4-((E)-Nitro-vinyl)-phenoxymethyl)-pyridineYield 97.3%

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

Conditions

Temperature
100 °C

Procedure

A mixture of 4-(pyridin-2-ylmethoxy)-benzaldehyde (29 g, 136 mmol) described in Manufacturing Example 203-1-1, nitromethane (36.6 mL, 680 mmol), ammonium acetate (21 g, 272 mmol), and acetic acid (300 mL) was stirred for 21 hours at 100° C. This mixture was cooled to room temperature and concentrated under a reduced pressure. The residue was partitioned into ethyl acetate and water. The organic layer was separated, 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 (33.9 g, 97%).

Workup

  1. temperatureThis mixture was cooled to room temperature
  2. concentrationconcentrated under a reduced pressure
  3. customThe residue was partitioned into ethyl acetate and water
  4. customThe organic layer was separated
  5. washwashed with water and saturated aqueous sodium chloride
  6. dry with materialdried over anhydrous magnesium sulfate
  7. filtrationfiltered
  8. concentrationThe filtrate was concentrated under a reduced pressure

Sources & evidence

ORD record
ord-a41c2e49e879436ba1f27eeeb95de024
Source dataset
uspto-grants-2014_09
Patent number
US08841327B2

Linked notes

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