HCID 67191235, compound → 2,3-Diamino-5-(5-methyl-3-oxo-4-pyridin-2-ylmethyl-cyclohexa-1,5-dienyl)-benzoic acid methyl ester

HRID 12255Notes

Reaction equation

HRID 12255 reaction equation
[CH3:1][O:2][C:3](=[O:29])[C:4]1[CH:9]=[C:8]([C:10]2[CH:15]=[C:14]([CH3:16])[CH:13]([CH2:17][C:18]3[CH:23]=[CH:22][CH:21]=[CH:20][N:19]=3)[C:12](=[O:24])[CH:11]=2)[CH:7]=[C:6]([N+:25]([O-])=O)[C:5]=1[NH2:28]>[Pd].C(OCC)(=O)C>[CH3:1][O:2][C:3](=[O:29])[C:4]1[CH:9]=[C:8]([C:10]2[CH:15]=[C:14]([CH3:16])[CH:13]([CH2:17][C:18]3[CH:23]=[CH:22][CH:21]=[CH:20][N:19]=3)[C:12](=[O:24])[CH:11]=2)[CH:7]=[C:6]([NH2:25])[C:5]=1[NH2:28]

Participants

4

Reactant 1

HCID 67191235HCID 67191235, compound

Product 1

HCID 116962422,3-Diamino-5-(5-methyl-3-oxo-4-pyridin-2-ylmethyl-cyclohexa-1,5-dienyl)-benzoic acid methyl ester

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 8857Ethyl AcetateSolvent

Procedure

To a slurry of 10% palladium on carbon (0.045 g) in ethyl acetate (20 mL) was added 2-amino-5-(5-methyl-3-oxo-4-pyridin-2-ylmethyl-cyclohexa-1,5-dienyl)-3-nitro-benzoic acid methyl ester (0.176 g, 0.44 mmol). The resulting mixture was hydrogenated at 30 psi for 24 hours. The reaction was filtered, concentrated in vacuo, and the crude isolate purified (SiO2, 2 to 10% methanol in methylene chloride) to afford the title compound. 1H NMR (500 MHz, CDCl3) δ 2.5 (s, 3H), 3.99 (s, 3H), 5.3 (s, 2H), 5.38 (bs, 2H), 6.39 (s, 1H), 6.25 (s, 1H), 7.93-7.21 (m, 4H), 8.61 (s, 1H), 8.93 (s, 1H).

Workup

  1. filtrationThe reaction was filtered
  2. concentrationconcentrated in vacuo
  3. customthe crude isolate
  4. custompurified (SiO2, 2 to 10% methanol in methylene chloride)

Sources & evidence

ORD record
ord-7f08f46a32ed4e2799df6df233f19d76
Source dataset
uspto-grants-2010_06
Patent number
US07727992B2

Reaction notes

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