2-Methyl-5-(2-methyl-4-nitrophenoxy)pyridine → 3-Methyl-4-((6-methylpyridin-3-yl)oxy)aniline

HRID 550424Notes

Reaction equation

HRID 550424 reaction equation
[CH3:1][C:2]1[CH:7]=[CH:6][C:5]([O:8][C:9]2[CH:14]=[CH:13][C:12]([N+:15]([O-])=O)=[CH:11][C:10]=2[CH3:18])=[CH:4][N:3]=1.[H][H]>[Pd].C(OCC)(=O)C.C(O)C>[CH3:18][C:10]1[CH:11]=[C:12]([CH:13]=[CH:14][C:9]=1[O:8][C:5]1[CH:4]=[N:3][C:2]([CH3:1])=[CH:7][CH:6]=1)[NH2:15]

Participants

6

Reactant 2

HCID 179901022-Methyl-5-(2-methyl-4-nitrophenoxy)pyridineHCID 178418361HCID 178418361, compound

Product 1

HCID 114244343-Methyl-4-((6-methylpyridin-3-yl)oxy)anilineYield 98%

Reagents, catalysts & solvents 3

HCID 23938PalladiumCatalystHCID 702EthanolSolventHCID 8857Ethyl AcetateSolvent

Procedure

A mixture of 2-methyl-5-(2-methyl-4-nitrophenoxy)pyridine (141 g, 0.58 mol) and 10% palladium on charcoal (13 g) in ethyl acetate (200 ml) and ethanol (700 ml) was stirred under an atmosphere of hydrogen (1.2 bar) for 5 hours. After reaction completion (the reaction being complete when 3 mole equivalents of hydrogen have been reacted), the mixture was purged with nitrogen and the catalyst was filtered off. The filtrate was evaporated to dryness to give 3-methyl-4-[(6-methylpyridin-3-yl)oxy]aniline as a white solid (120.6 g, 98%); NMR Spectrum (CDCl3): 2.11 (s, 3H), 2.50 (s, 3H), 6.51 (d, 1H), 6.58 (s, 1H), 6.75 (d, 1H), 6.98-7.03 (m, 2H), 8.18 (s, 1H); Mass spectrum: MH+ 215.

Workup

  1. customAfter reaction completion (the reaction
  2. customhave been reacted), the mixture
  3. customwas purged with nitrogen
  4. filtrationthe catalyst was filtered off
  5. customThe filtrate was evaporated to dryness

Sources & evidence

ORD record
ord-e68a257302d4406188dad86a0a35de5d
Source dataset
uspto-grants-2011_05
Patent number
US07947676B2

Reaction notes

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