Cesium carbonate → 2-[3-(4-Acetyl-3-hydroxy-2-propyl-phenoxymethyl)-phenylamino]-isonicotinic acid methyl ester

HRID 2267034Notes

Reaction equation

HRID 2267034 reaction equation
[NH2:1][C:2]1[CH:3]=[C:4]([CH:20]=[CH:21][CH:22]=1)[CH2:5][O:6][C:7]1[CH:12]=[CH:11][C:10]([C:13](=[O:15])[CH3:14])=[C:9]([OH:16])[C:8]=1[CH2:17][CH2:18][CH3:19].[CH3:23][O:24][C:25](=[O:33])[C:26]1[CH:31]=[CH:30][N:29]=[C:28](Cl)[CH:27]=1.C(=O)([O-])[O-].[Cs+].[Cs+]>C1(C)C=CC=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[CH3:23][O:24][C:25](=[O:33])[C:26]1[CH:31]=[CH:30][N:29]=[C:28]([NH:1][C:2]2[CH:22]=[CH:21][CH:20]=[C:4]([CH2:5][O:6][C:7]3[CH:12]=[CH:11][C:10]([C:13](=[O:15])[CH3:14])=[C:9]([OH:16])[C:8]=3[CH2:17][CH2:18][CH3:19])[CH:3]=2)[CH:27]=1

Participants

6

Reactant 3

HCID 10796Cesium carbonateHCID 2736842Methyl 2-chloropyridine-4-carboxylateHCID 145235601-{4-[(3-Aminophenyl)methoxy]-2-hydroxy-3-propylphenyl}ethan-1-one

Product 1

HCID 685349622-[3-(4-Acetyl-3-hydroxy-2-propyl-phenoxymethyl)-phenylamino]-isonicotinic acid methyl esterYield 39%

Reagents, catalysts & solvents 2

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 1140TolueneSolvent

Conditions

Temperature
110 °C

Procedure

Combine 1-[4-(3-amino-benzyloxy)-2-hydroxy-3-propyl-phenyl]-ethanone (500 mg, 1.67 mmol), 2-chloro-isonicotinic acid methyl ester (287 mg, 1.67 mmol) and cesium carbonate (762 mg, 2.34 mmol) in toluene (25 mL) and stir. Purge reaction vessel with argon. Add 2-(bicyclohexylphosphino)biphenyl (234 mg, 0.668 mmol), and tris(dibenzylideneacetone)dipalladium (153 mg, 0.167 mmol). Purge reaction vessel with argon. Heat to 110° C. After 18 hours, cool to ambient temperature. Add diethyl ether (25 mL) and filter. Concentrate filtrate under reduced pressure to dryness. Purify the resulting residue by flash chromatography eluting with ethyl acetate:hexanes to yield the title compound as a yellow solid (282 mg, 39%): 1H NMR (DMSO-d6) δ 0.86 (t, 3H), 1.52 (sextet, 2H), 2.57 (s, 3H), 2.63 (t, 2H), 3.88 (s, 3H), 5.25 (bs, 2H), 6.72 (d, 1H), 6.99 (d, 1H), 7.14 (d, 1H), 7.31 (t, 1H), 7.39 (s, 1H), 7.58 (d, 1H), 7.80 (d, 1H), 7.91 (s, 1H), 8.29 (d, 1H), 9.43 (s, 1H), 12.85 (s, 1H).

Workup

  1. customPurge
  2. customreaction vessel with argon
  3. customPurge
  4. customreaction vessel with argon
  5. temperaturecool to ambient temperature
  6. filtrationAdd diethyl ether (25 mL) and filter
  7. customPurify the resulting residue by flash chromatography
  8. washeluting with ethyl acetate

Sources & evidence

ORD record
ord-0c75e2ab68e843ef840ccf697e94569b
Source dataset
uspto-grants-2010_12
Patent number
US07858646B2

Reaction notes

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