Sulfuric Acid → HCID 20275138, compound

HRID 370706Notes

Reaction equation

HRID 370706 reaction equation
[Cl:1][C:2]1[CH:7]=[C:6]([Cl:8])[CH:5]=[CH:4][C:3]=1[N+:9]([O-:11])=[O:10].[Na+].[Cl-].[S:14](=O)(=[O:17])([OH:16])[OH:15]>>[Cl:8][C:6]1[CH:7]=[C:2]([Cl:1])[C:3]([N+:9]([O-:11])=[O:10])=[CH:4][C:5]=1[S:14]([OH:17])(=[O:16])=[O:15]

Participants

4

Reactant 3

HCID 1118Sulfuric AcidHCID 5234Sodium ChlorideHCID 118992,4-Dichloronitrobenzene

Product 1

HCID 20275138HCID 20275138, compound

Conditions

Temperature
50 °C

Procedure

2,4-Dichloronitrobenzene (122 g (0.635 moles)) in 20% fuming sulfuric acid was heated at a temperature of 120° C. to 130° C. for 5 hours with stirring. After completion of the reaction, the reaction mixture was added portionwise to 1.5 l of ice water. The resulting aqueous solution was warmed to 50° C. and 400 g of NaCl was added thereto followed by cooling to room temperature. Crystals which separated out were collected by filtration, washed with water and with acetonitrile and dried.

Workup

  1. customAfter completion of the reaction
  2. temperatureby cooling to room temperature
  3. customCrystals which separated out
  4. filtrationwere collected by filtration
  5. washwashed with water and with acetonitrile
  6. customdried

Sources & evidence

ORD record
ord-d4210e3f15aa4334891858e0aa4f0774
Source dataset
uspto-grants-1985_07
Patent number
US04528258

Reaction notes

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