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

HRID 1968685Notes

Reaction equation

HRID 1968685 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-997353217b69465381cfc8d0f2bfa86a
Source dataset
uspto-grants-2013_04
Patent number
US08426426B2

Reaction notes

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