Sulfuric Acid → HCID 10947012, compound

HRID 342053Notes

Reaction equation

HRID 342053 reaction equation
[Br:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[Br:8].[S:9](=O)(=[O:12])([OH:11])[OH:10]>C(Cl)CCl>[Br:1][C:2]1[CH:7]=[C:6]([S:9]([OH:12])(=[O:11])=[O:10])[CH:5]=[CH:4][C:3]=1[Br:8]

Participants

4

Reactant 2

HCID 1118Sulfuric AcidHCID 114141,2-Dibromobenzene

Product 1

HCID 10947012HCID 10947012, compoundYield 94.9%

Reagents, catalysts & solvents 1

HCID 111,2-DichloroethaneSolvent

Procedure

A 300-ml four-neck flask equipped with a stirring device, a condenser and a thermometer was prepared. Then, 90 g of 1,2-ethylene dichloride and 45 g (0.19 mols) of 1,2-dibromobenzene were placed in the flask, and 53.5 g (0.20 mols) of 30% fuming sulfuric acid was added thereto dropwise in a gentle stream of nitrogen gas and allowed to react therewith at 70° C. for 2 hours. After the resulting reaction product solution was cooled, a reaction product was filtered out, and then dried. Thus, 57 g of crude 3,4-dibromobenzenesulfonic acid was obtained.

Workup

  1. customA 300-ml four-neck flask equipped with a stirring device, a condenser
  2. customa thermometer was prepared
  3. additionwas added
  4. customto react
  5. customAfter the resulting reaction product solution
  6. temperaturewas cooled
  7. filtrationa reaction product was filtered out
  8. customdried

Sources & evidence

ORD record
ord-4f764b8917c04db49e9fbe3a01899272
Source dataset
uspto-grants-1999_01
Patent number
US05856520

Reaction notes

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