Ethanol → HCID 58780935, compound

HRID 1373184Notes

Reaction equation

HRID 1373184 reaction equation
[N+:1]([C:4]1[CH:5]=[C:6]([CH:20]=[C:21]([O:23][CH2:24][CH2:25][C:26]2[S:30][CH:29]=[N:28][C:27]=2[CH3:31])[CH:22]=1)[C:7]([NH:9][C:10]1[CH:15]=[CH:14][C:13]([C:16]([O:18]C)=[O:17])=[CH:12][N:11]=1)=[O:8])([O-])=O.C(O)C.[H][H]>[Pd].C(OCC)(=O)C>[NH2:1][C:4]1[CH:5]=[C:6]([CH:20]=[C:21]([O:23][CH2:24][CH2:25][C:26]2[S:30][CH:29]=[N:28][C:27]=2[CH3:31])[CH:22]=1)[C:7]([NH:9][C:10]1[CH:15]=[CH:14][C:13]([C:16]([OH:18])=[O:17])=[CH:12][N:11]=1)=[O:8]

Participants

6

Reactant 3

HCID 702EthanolHCID 58780922HCID 58780922, compoundHCID 178418361HCID 178418361, compound

Product 1

HCID 58780935HCID 58780935, compoundYield 60%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 8857Ethyl AcetateSolvent

Procedure

10% Palladium on carbon (0.20 g) was added under an argon atmosphere to a solution of methyl 2-[3-nitro-5-(4-methyl-thiazol-5-yl) ethoxy benzoyl]amino-5-pyridine carboxylate (1.05 g, 1.7 mM) in ethyl acetate (50 ml)/ethanol (50 ml). Hydrogen gas was introduced and the reaction mixture stirred vigorously for 18 hrs before filtering through diatomaceous earth, concentration in vacuo and replacement of the catalyst (80 mg). After stirring under hydrogen gas for a further 18 hrs a final catalyst change was carried out, after which the crude aniline was purified on silica gel (1% to 4% MeOH/DCM) to give the title compound as a colourless solid (0.43 g, 60%); 1H NMR δ (d6-DMSO): 2.36 (s, 3H), 3.18 (dd, 2H), 3.88 (s, 3H), 4.12 (dd, 2H), 5.32 (bs, 2H), 6.33 (m, 1H), 6.79 (m, 2H), 8.30 (m, 2H), 8.81 (s, 1H), 8.88 (m, 1H), 10.90 (bs, 1H).

Workup

  1. filtrationbefore filtering through diatomaceous earth, concentration in vacuo and replacement of the catalyst (80 mg)
  2. stirringAfter stirring under hydrogen gas for a further 18 hrs a final catalyst change
  3. customafter which the crude aniline was purified on silica gel (1% to 4% MeOH/DCM)

Sources & evidence

ORD record
ord-de46b54cc93447cba19abef8c18b31d4
Source dataset
uspto-grants-2007_01
Patent number
US07160906B2

Reaction notes

Loading…