p-Toluenesulfonic acid → Benzenesulfonic acid, 4-methyl-, zinc salt (2:1)

HRID 1633118Notes

Reaction equation

HRID 1633118 reaction equation
[O-2].[Zn+2:2].[C:3]1([CH3:13])[CH:8]=[CH:7][C:6]([S:9]([OH:12])(=[O:11])=[O:10])=[CH:5][CH:4]=1>O>[C:3]1([CH3:13])[CH:4]=[CH:5][C:6]([S:9]([O-:12])(=[O:10])=[O:11])=[CH:7][CH:8]=1.[Zn+2:2].[C:3]1([CH3:13])[CH:4]=[CH:5][C:6]([S:9]([O-:12])(=[O:10])=[O:11])=[CH:7][CH:8]=1

Participants

4

Reactant 2

HCID 6101p-Toluenesulfonic acidHCID 3007857Zinc Oxide

Product 1

HCID 83452Benzenesulfonic acid, 4-methyl-, zinc salt (2:1)

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

To an appropriate vessel there is charged 618 gms (7.6 moles) of zinc oxide in an aqueous slurry. With vigorous stirring there is slowly added to the charge 650 gms (3.8 moles) of p-toluene sulfonic acid in 1 liter of water. The resulting reaction mixture produces an exotherm and heats up to a temperature of circa 100° C. With continued stirring, the mixture is allowed to cool to room temperature and then stood overnight. The crystal precipitate is then separated by filtration, washed and dried to obtain zinc p-toluene sulfonate.

Workup

  1. customThe resulting reaction mixture
  2. customproduces an exotherm
  3. customheats up to a temperature of circa 100° C
  4. stirringWith continued stirring
  5. customThe crystal precipitate is then separated by filtration
  6. washwashed
  7. customdried

Sources & evidence

ORD record
ord-b2d7bec7df0142c0b15dd86af22b71b7
Source dataset
uspto-grants-1984_10
Patent number
US04478926

Reaction notes

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