Sodium Acetate → N-{4-chloro-2-[1-(4-chlorophenoxyimino)butyl]phenyl}trifluoromethanesulfonamide

HRID 970878Notes

Reaction equation

HRID 970878 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([NH:8][S:9]([C:12]([F:15])([F:14])[F:13])(=[O:11])=[O:10])=[C:4]([C:16](=O)[C:17]([CH3:20])(C)C)[CH:3]=1.Cl.[Cl:23][C:24]1[CH:29]=[CH:28][C:27]([O:30][NH2:31])=[CH:26][CH:25]=1.[CH3:32]C([O-])=O.[Na+]>CCO>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([NH:8][S:9]([C:12]([F:13])([F:14])[F:15])(=[O:10])=[O:11])=[C:4]([C:16](=[N:31][O:30][C:27]2[CH:28]=[CH:29][C:24]([Cl:23])=[CH:25][CH:26]=2)[CH2:17][CH2:20][CH3:32])[CH:3]=1

Participants

5

Reactant 3

HCID 517045Sodium AcetateHCID 20445467O-(4-chlorophenyl)hydroxylamine hydrochlorideHCID 67270985N-[4-chloro-2-(2,2-dimethylpropionyl)phenyl]trifluoromethanesulfonamide

Product 1

HCID 73021830N-{4-chloro-2-[1-(4-chlorophenoxyimino)butyl]phenyl}trifluoromethanesulfonamideYield 10.1%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

A solution of N-[4-chloro-2-(2,2-dimethylpropionyl)phenyl]trifluoromethanesulfonamide 29C (300 mg, 0.87 mmol), O-(4-chlorophenyl)hydroxylamine hydrochloride (173 mg, 0.96 mmol) and anhydrous NaOAc (80 mg, 0.96 mmol) in EtOH (20 mL) was stirred for 40 hours at RT. The reaction mixture was concentrated under vacuum, the residue filtered through a pad of silica (eluting with CH2Cl2/PE, 3:7) and the solvent removed under reduced pressure. The residue was purified by recrystallization from CH2Cl2/PE to afford N-{4-chloro-2-[1-(4-chlorophenoxyimino)butyl]phenyl}trifluoromethanesulfonamide 182 (40 mg, 10%), as a yellow solid. M.p. 69-70° C. 1H n.m.r. (200 MHz, CDCl3) δ 7.52, d, J=8.8 Hz, 1H; 7.43, dd, J=2.2 and 8.8 Hz, 1H; 7.25, d, J=9.2 Hz, 2H; 7.18, d, J=2.2 Hz, 1H; 7.01, d, J=9.2 Hz, 2H; 6.43, br s, 1H; 1.33, s, 9H.

Workup

  1. concentrationThe reaction mixture was concentrated under vacuum
  2. filtrationthe residue filtered through a pad of silica (eluting with CH2Cl2/PE, 3:7)
  3. customthe solvent removed under reduced pressure
  4. customThe residue was purified by recrystallization from CH2Cl2/PE

Sources & evidence

ORD record
ord-dd54c8702fe64544adea72f5d2ef1519
Source dataset
uspto-grants-2007_12
Patent number
US07312248B2

Reaction notes

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