Aniline → 5-Chloro-3-[(4-chloro-3-trifluoromethyl-benzenesulfonyl)-methoxymethyl-amino]-pyridine-2-carboxylic acid phenylamide

HRID 419052Notes

Reaction equation

HRID 419052 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([N:11]([S:15]([C:18]2[CH:23]=[CH:22][C:21]([Cl:24])=[C:20]([C:25]([F:28])([F:27])[F:26])[CH:19]=2)(=[O:17])=[O:16])[CH2:12][O:13][CH3:14])[C:5]([C:8](O)=[O:9])=[N:6][CH:7]=1.C(Cl)(=O)C(Cl)=O.C(N(CC)CC)C.[NH2:42][C:43]1[CH:48]=[CH:47][CH:46]=[CH:45][CH:44]=1>C(Cl)Cl>[C:43]1([NH:42][C:8]([C:5]2[C:4]([N:11]([S:15]([C:18]3[CH:23]=[CH:22][C:21]([Cl:24])=[C:20]([C:25]([F:27])([F:28])[F:26])[CH:19]=3)(=[O:17])=[O:16])[CH2:12][O:13][CH3:14])=[CH:3][C:2]([Cl:1])=[CH:7][N:6]=2)=[O:9])[CH:48]=[CH:47][CH:46]=[CH:45][CH:44]=1

Participants

6

Reactant 4

HCID 6115AnilineHCID 8471TriethylamineHCID 65578Oxalyl chlorideHCID 579422305-Chloro-3-[(4-chloro-3-trifluoromethyl-benzenesulfonyl)-methoxymethyl-amino]-pyridine-2-carboxylic acid

Product 1

HCID 579425615-Chloro-3-[(4-chloro-3-trifluoromethyl-benzenesulfonyl)-methoxymethyl-amino]-pyridine-2-carboxylic acid phenylamide

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

To a magnetically stirred solution of 5-chloro-3-[(4-chloro-3-trifluoromethyl-benzenesulfonyl)-methoxymethyl-amino]-pyridine-2-carboxylic acid (229 mg, 0.50 mmol) in anhydrous methylene chloride (5 mL) was added oxalyl chloride (0.5 mL) at room temperature. The reaction was heated at reflux for 1 h, then concentrated to dryness. The residue was dissolved in methylene chloride (4 mL) and this solution was added dropwise to a magnetically stirred solution of triethylamine (1.0 mL) and aniline (93 mg, 1.00 mmol) in methylene chloride (2 mL). The reaction mixture was stirred 1 h (the reaction was monitored by LCMS), quenched with saturated aqueous NH4Cl (50 mL), and the aqueous layer was extracted with EtOAc (3×75 mL). The combined extracts were washed with 0.5 M HCl (50 mL) and water (50 mL), dried (MgSO4), filtered, and concentrated. The residue was purified by chromatography on silica gel using a gradient of ethyl acetate-hexane (0:100 to 100:0) to afford pure 5-chloro-3-[(4-chloro-3-trifluoromethyl-benzenesulfonyl)-methoxymethyl-amino]-pyridine-2-carboxylic acid phenylamide. MS m/z 556.1 (M+Na); 502.1 (M+H-MeOH).

Workup

  1. temperatureThe reaction was heated
  2. temperatureat reflux for 1 h
  3. concentrationconcentrated to dryness
  4. dissolutionThe residue was dissolved in methylene chloride (4 mL)
  5. customquenched with saturated aqueous NH4Cl (50 mL)
  6. extractionthe aqueous layer was extracted with EtOAc (3×75 mL)
  7. washThe combined extracts were washed with 0.5 M HCl (50 mL) and water (50 mL)
  8. dry with materialdried (MgSO4)
  9. filtrationfiltered
  10. concentrationconcentrated
  11. customThe residue was purified by chromatography on silica gel using a gradient of ethyl acetate-hexane (0:100 to 100:0)

Sources & evidence

ORD record
ord-b3826bede0954027ab717e8ac073e63b
Source dataset
uspto-grants-2012_01
Patent number
US08093247B2

Reaction notes

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