HCID 14967807, compound → HCID 14967808, compound

HRID 2226619Notes

Reaction equation

HRID 2226619 reaction equation
[Br:1][C:2]1[C:11]2[C:6](=[C:7]([Br:23])[CH:8]=[CH:9][C:10]=2[NH:12]S(C2C=CC(C)=CC=2)(=O)=O)[C:5]([NH:24]S(C2C=CC(C)=CC=2)(=O)=O)=[CH:4][CH:3]=1>OS(O)(=O)=O>[Br:1][C:2]1[C:11]2[C:6](=[C:7]([Br:23])[CH:8]=[CH:9][C:10]=2[NH2:12])[C:5]([NH2:24])=[CH:4][CH:3]=1

Participants

3

Reactant 1

HCID 14967807HCID 14967807, compound

Product 1

HCID 14967808HCID 14967808, compound

Reagents, catalysts & solvents 1

HCID 1118Sulfuric AcidSolvent

Procedure

15 g (0.024 mol) of 4,8-dibromo-1,5-ditoluene-p-sulfonamidonaphthalene (J. S. Whitehurst, J. Chem. Soc., 221-226 (1951)) are dissolved in 75 ml of concentrated H2SO4 and the solution is left to stand for 24 h, excluding light. The solution is then poured on to 450 g of ice, whereupon a violet solution forms from which the product precipitates as HSO4 salt after a few minutes. The precipitate is isolated by suction filtration and the filter cake is squeezed out to give a pale beige-violet crude product that is further processed immediately.

Workup

  1. waitthe solution is left
  2. customprecipitates as HSO4 salt after a few minutes
  3. customThe precipitate is isolated by suction filtration

Sources & evidence

ORD record
ord-d2bd067568454341968f64c11a0de63a
Source dataset
uspto-grants-1994_09
Patent number
US05349062

Reaction notes

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