Sodium sulfite heptahydrate → Sodium 6-bromonaphthalene-2-sulfinate

HRID 346665Notes

Reaction equation

HRID 346665 reaction equation
[Br:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[CH:8]=[C:7]([S:12](Cl)(=[O:14])=[O:13])[CH:6]=[CH:5]2.O.O.O.O.O.O.O.S([O-])([O-])=O.[Na+:27].[Na+].C(=O)(O)[O-].[Na+]>O>[Br:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[CH:8]=[C:7]([S:12]([O-:14])=[O:13])[CH:6]=[CH:5]2.[Na+:27]

Participants

5

Reactant 3

HCID 160916Sodium sulfite heptahydrateHCID 516892Sodium BicarbonateHCID 144577416-Bromonaphthalene-2-sulfonyl chloride

Product 1

HCID 69513058Sodium 6-bromonaphthalene-2-sulfinateYield 89.5%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
70 °C

Procedure

6-Bromonaphth-2-ylsulphonyl chloride (9.4 g) was added in small portions over 3 hours to a stirred mixture of sodium sulphite heptahydrate (14.46 g), sodium bicarbonate (5.08 g) and water (100 ml) which had been heated to 70° C. The resultant mixture was allowed to cool slowly to ambient temperature. The crystalline precipitate was isolated giving sodium 6-bromonaphth-2-ylsulphinate (8.07 g) which was used without further purification.

Workup

  1. temperatureto cool slowly to ambient temperature
  2. customThe crystalline precipitate was isolated

Sources & evidence

ORD record
ord-35a35cf4c9d84bb8a5aa8f09b48f63a4
Source dataset
uspto-grants-2007_02
Patent number
US07173025B1

Reaction notes

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