1,2-Dichlorobenzene → 1,2,4-Trichlorobenzene

HRID 1589439Notes

Reaction equation

HRID 1589439 reaction equation
[Cl:1]Cl.C(=O)([O-])[O-].[Na+].[Na+].[Cl:9][C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][C:11]=1[Cl:16]>>[Cl:9][C:10]1[CH:15]=[CH:14][CH:13]=[C:12]([Cl:1])[C:11]=1[Cl:16].[Cl:9][C:10]1[CH:15]=[CH:14][C:13]([Cl:1])=[CH:12][C:11]=1[Cl:16]

Participants

5

Reactant 3

HCID 72391,2-DichlorobenzeneHCID 10340Sodium CarbonateHCID 24526Chlorine

Product 2

HCID 131,2,4-TrichlorobenzeneHCID 68951,2,3-Trichlorobenzene

Procedure

The o-dichlorobenzene and the catalyst are introduced into the reaction vessel and the chlorine is passed in until a certain density is reached. After completion of the reaction, the chlorination product is neutralised, for example with sodium carbonate, washed with water and distilled in vacuo. A mixture which essentially contains 1,2,3-trichlorobenzene and 1,2,4-trichlorobenzene is obtained; the two isomers can be separated by fractional distillation in the usual manner.

Workup

  1. customAfter completion of the reaction
  2. washwashed with water
  3. distillationdistilled in vacuo

Sources & evidence

ORD record
ord-553cb0e50b0f4b42a3ffe0e1626b7c71
Source dataset
uspto-grants-1986_02
Patent number
US04570023

Reaction notes

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