Sodium Thiosulfate → 2-(2-tert-butylsulfinylphenyl)-3-methyl-6-trifluoromethyl-3H-imidazo[4,5-b]pyridine

HRID 923743Notes

Reaction equation

HRID 923743 reaction equation
[C:1]([S:5][C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][C:7]=1[C:12]1[N:24]([CH3:25])[C:15]2=[N:16][CH:17]=[C:18]([C:20]([F:23])([F:22])[F:21])[CH:19]=[C:14]2[N:13]=1)([CH3:4])([CH3:3])[CH3:2].ClC1C=CC=C(C(OO)=[O:34])C=1.C(=O)([O-])O.[Na+].S([O-])([O-])(=O)=S.[Na+].[Na+]>C(Cl)(Cl)Cl>[C:1]([S:5]([C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][C:7]=1[C:12]1[N:24]([CH3:25])[C:15]2=[N:16][CH:17]=[C:18]([C:20]([F:22])([F:23])[F:21])[CH:19]=[C:14]2[N:13]=1)=[O:34])([CH3:4])([CH3:3])[CH3:2]

Participants

6

Reactant 4

HCID 24477Sodium ThiosulfateHCID 70297m-Chloroperbenzoic acidHCID 516892Sodium BicarbonateHCID 867081972-(2-tert-butylsulfanylphenyl)-3-methyl-6-trifluoromethyl-3H-imidazo[4,5-b]pyridine

Product 1

HCID 867081962-(2-tert-butylsulfinylphenyl)-3-methyl-6-trifluoromethyl-3H-imidazo[4,5-b]pyridineYield 36.3%

Reagents, catalysts & solvents 1

HCID 6212ChloroformSolvent

Procedure

To a mixture of 2-(2-tert-butylsulfanylphenyl)-3-methyl-6-trifluoromethyl-3H-imidazo[4,5-b]pyridine (0.87 g) and chloroform (12 ml), 3-chloroperbenzoic acid (purity: not less than 65%) (0.95 g) was added under ice-cooling, heated to room temperature, and stirred for 2 hours. Into the reaction mixture, saturated aqueous sodium hydrogen carbonate solution and saturated aqueous sodium thiosulfate solution were poured, and extracted with chloroform. The organic layer was dried over magnesium sulfate, and concentrated under reduced pressure. The resulting residue was subjected to silica gel column chromatography to give 0.33 g of 2-(2-tert-butylsulfinylphenyl)-3-methyl-6-trifluoromethyl-3H-imidazo[4,5-b]pyridine (hereinafter referred to as present Compound 16) and 0.52 g of 2-(2-tert-butylsulfonylphenyl)-3-methyl-6-trifluoromethyl-3H-imidazo[4,5-b]pyridine (hereinafter referred to as Present Compound 17).

Workup

  1. additionwas added under ice-
  2. temperaturecooling
  3. extractionextracted with chloroform
  4. dry with materialThe organic layer was dried over magnesium sulfate
  5. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-5095c8b877874c56b62f37a50a48f7f6
Source dataset
uspto-grants-2016_03
Patent number
US09278983B2

Reaction notes

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