Sodium Persulfate → p-Toluenesulfonic acid

HRID 333488

Reaction equation

HRID 333488 reaction equation
O.[C:2]1([CH3:12])[CH:7]=[CH:6][C:5]([S:8]([OH:11])(=[O:10])=[O:9])=[CH:4][CH:3]=1.C1COC2C(=CSC=2)O1.[O-]S(OOS([O-])(=O)=O)(=O)=O.[Na+].[Na+]>O.O.O.O.O.O.O.S([O-])([O-])(=O)=O.[Fe+3].S([O-])([O-])(=O)=O.S([O-])([O-])(=O)=O.[Fe+3].O>[CH3:12][C:2]1[CH:7]=[CH:6][C:5]([S:8]([OH:11])(=[O:10])=[O:9])=[CH:4][CH:3]=1

Participants

6

Reactant 3

HCID 62655Sodium PersulfateHCID 521998p-Toluenesulfonic acid monohydrateHCID 44218643,4-Ethylenedioxythiophene

Product 1

HCID 6101p-Toluenesulfonic acid

Reagents, catalysts & solvents 2

HCID 56841451Ferric sulfate heptahydrateCatalystHCID 962WaterSolvent

Procedure

A 5 1 glass reactor with stirrer and thermometer was initially charged with 2.5 l of demineralized water. While stirring, 214.2 g of p-toluenesulfonic acid monohydrate and 2.25 g of iron(III) sulfate heptahydrate were introduced. Once everything had dissolved, 85.8 g of 3,4-ethylenedioxythiophene were added and the mixture was stirred for 30 minutes. Subsequently, 192.9 g of sodium peroxodisulfate were introduced with stirring and the mixture was stirred at room temperature for a further 24 hours. After the reaction had ended, the PEDT/p-toluenesulfonate powder formed was filtered off on a porcelain suction filter, washed with 3 l of demineralized water and finally dried at 100° C. for 6 hours. 89 g of a blue-black PEDT-toluenesulfonate powder were obtained.

Workup

  1. dissolutionOnce everything had dissolved
  2. stirringthe mixture was stirred for 30 minutes
  3. stirringwith stirring
  4. stirringthe mixture was stirred at room temperature for a further 24 hours

Sources & evidence

ORD record
ord-cf0ce051c77b4d91b23c49f99f3a2b64
Source dataset
uspto-grants-2014_11
Patent number
US08882856B2

Linked notes

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