Water → 4-chloro-N-[5-chloro-2-(2-chloro-3-methyl-benzoyl)-pyridin-3-yl]-3-trifluoromethyl-benzenesulfonamide

HRID 1898152Notes

Reaction equation

HRID 1898152 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([S:8]([N:11]([C:15]2[C:16]([C:22](=[O:31])[C:23]3[CH:28]=[CH:27][CH:26]=[C:25]([CH3:29])[C:24]=3[Cl:30])=[N:17][CH:18]=[C:19]([Cl:21])[CH:20]=2)COC)(=[O:10])=[O:9])=[CH:4][C:3]=1[C:32]([F:35])([F:34])[F:33].O>Cl.O1CCOCC1>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([S:8]([NH:11][C:15]2[C:16]([C:22](=[O:31])[C:23]3[CH:28]=[CH:27][CH:26]=[C:25]([CH3:29])[C:24]=3[Cl:30])=[N:17][CH:18]=[C:19]([Cl:21])[CH:20]=2)(=[O:9])=[O:10])=[CH:4][C:3]=1[C:32]([F:34])([F:35])[F:33]

Participants

5

Reactant 2

HCID 962WaterHCID 579422364-chloro-N-[5-chloro-2-(2-chloro-3-methyl-benzoyl)-pyridin-3-yl]-N-methoxymethyl-3-trifluoromethyl-benzenesulfonamide

Product 1

HCID 579424274-chloro-N-[5-chloro-2-(2-chloro-3-methyl-benzoyl)-pyridin-3-yl]-3-trifluoromethyl-benzenesulfonamideYield 64%

Reagents, catalysts & solvents 2

HCID 313Hydrochloric AcidSolventHCID 312751,4-DioxaneSolvent

Procedure

A mixture of 4-chloro-N-[5-chloro-2-(2-chloro-3-methyl-benzoyl)-pyridin-3-yl]-N-methoxymethyl-3-trifluoromethyl-benzenesulfonamide (58.6 mg, 1.03 mmol) in 4 N HCl in dioxane (4 mL) and water (1 mL) was stirred at 100° C. for overnight. The reaction mixture was cooled to room temperature, evaporated to dryness and treated with saturated aqueous NaHCO3 solution till pH 7-8. The mixture was extracted with EtOAc (2×25 mL), dried (anhydrous Na2SO4) and concentrated. The obtained residue was purified via column chromatography (SiO2, 70% EtOAc in hexanes) to afford 4-chloro-N-[5-chloro-2-(2-chloro-3-methyl-benzoyl)-pyridin-3-yl]-3-trifluoromethyl-benzenesulfonamide (34.5 mg) in 64% yield. 1H NMR (400 MHz, CDCl3) 611.00 (s, 1H), 8.24 (d, 1H), 8.18 (m, 1H), 8.17 (d, 1H), 7.98 (dd, 1H), 7.63 (d, 1H), 7.35 (d, 1H), 7.24 (t, 1H), 7.1 (d, 1H), 2.37 (s, 3H); ESMS m/z (relative intensity): 522.9 (M+H)+ (100), 544.9 (M+Na)+ (100).

Workup

  1. customevaporated to dryness
  2. additiontreated with saturated aqueous NaHCO3 solution till pH 7-8
  3. extractionThe mixture was extracted with EtOAc (2×25 mL)
  4. dry with materialdried (anhydrous Na2SO4)
  5. concentrationconcentrated
  6. customThe obtained residue was purified via column chromatography (SiO2, 70% EtOAc in hexanes)

Sources & evidence

ORD record
ord-387b9ca7229b4de3855b7963e5be8560
Source dataset
uspto-grants-2013_08
Patent number
US08519135B2

Reaction notes

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