Sulfuric Acid → HCID 10947012, compound

HRID 619767Notes

Reaction equation

HRID 619767 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 73.4%

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, 80 g of 1,2-ethylene dichloride and 51 g (0.22 mols) of 1,2-dibromobenzene were placed in the flask, and 38 g (0.29 mols) of 60% 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, 51 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-9ab9e95ee92a4921a7dcf764c327d492
Source dataset
uspto-grants-1999_09
Patent number
US05959152

Reaction notes

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