m-Chloroperbenzoic acid → 4,5-Bis(4-methoxyphenyl)-2-(2-pyridylsulfinyl)imidazole

HRID 1995224Notes

Reaction equation

HRID 1995224 reaction equation
ClC1C=CC=C(C(OO)=[O:9])C=1.[CH3:12][O:13][C:14]1[CH:19]=[CH:18][C:17]([C:20]2[N:21]=[C:22]([S:33][C:34]3[CH:39]=[CH:38][CH:37]=[CH:36][N:35]=3)[NH:23][C:24]=2[C:25]2[CH:30]=[CH:29][C:28]([O:31][CH3:32])=[CH:27][CH:26]=2)=[CH:16][CH:15]=1>ClCCl>[CH3:32][O:31][C:28]1[CH:29]=[CH:30][C:25]([C:24]2[N:23]=[C:22]([S:33]([C:34]3[CH:39]=[CH:38][CH:37]=[CH:36][N:35]=3)=[O:9])[NH:21][C:20]=2[C:17]2[CH:16]=[CH:15][C:14]([O:13][CH3:12])=[CH:19][CH:18]=2)=[CH:26][CH:27]=1

Participants

4

Reactant 2

HCID 70297m-Chloroperbenzoic acidHCID 128323904,5-Bis(4-methoxyphenyl)-2-(2-pyridylthio)imidazole

Product 1

HCID 128323654,5-Bis(4-methoxyphenyl)-2-(2-pyridylsulfinyl)imidazoleYield 84.2%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

A solution of 2.164 g of 3-chloroperbenzoic acid (80%) in 150 ml of dichloromethane is added dropwise to a solution of 3.90 g of 4,5-bis(4-methoxyphenyl)-2-(2-pyridylthio)imidazole in 100 ml of dichloromethane. The solution is stirred for 3 hours at room temperature, washed with sodium bicarbonate solution, dried over sodium sulfate, and concentrated under vacuum to dryness. The residue is chromatographed on 150 g of silica gel with acetone/hexane, thus producing 3.42 g of 4,5-bis(4-methoxyphenyl)-2-(2-pyridylsulfinyl)imidazole as an amorphous foam.

Workup

  1. washwashed with sodium bicarbonate solution
  2. dry with materialdried over sodium sulfate
  3. concentrationconcentrated under vacuum to dryness
  4. customThe residue is chromatographed on 150 g of silica gel with acetone/hexane

Sources & evidence

ORD record
ord-80a86884d93c4c648da9a29e993f7ad8
Source dataset
uspto-grants-1983_09
Patent number
US04402960

Reaction notes

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