Chlorine → HCID 12445115, compound

HRID 430399Notes

Reaction equation

HRID 430399 reaction equation
[Cl:1]Cl.[CH3:3][C:4]1[CH:8]([CH3:9])[C:7](=[O:10])[NH:6][N:5]=1>ClCCCl>[CH3:3][C:4]1[C:8]([CH3:9])([Cl:1])[C:7](=[O:10])[NH:6][N:5]=1

Participants

4

Reactant 2

HCID 24526ChlorineHCID 979472,4-Dihydro-4,5-dimethyl-3H-pyrazol-3-one

Product 1

HCID 12445115HCID 12445115, compound

Reagents, catalysts & solvents 1

HCID 111,2-DichloroethaneSolvent

Procedure

A chlorine gas was introduced into a solution of 3,4-dimethyl-2-pyrazolin-5-one in 1,2-dichloroethane, followed by gradual refluxing. After the reaction, the reaction mixture was cooled and filtered. The solvent was then distilled off. The residue in the form of an oil was recrystallized from a 1:1 mixture of benzene and petroleum ether, whereby 3,4-dimethyl-4-chloro-2-pyrazolin-5-one was obtained.

Workup

  1. customAfter the reaction
  2. temperaturethe reaction mixture was cooled
  3. filtrationfiltered
  4. distillationThe solvent was then distilled off
  5. customThe residue in the form of an oil was recrystallized from a 1:1 mixture of benzene and petroleum ether

Sources & evidence

ORD record
ord-4f8625b4746547ac91aeb5c618a5af54
Source dataset
uspto-grants-2001_11
Patent number
US06322908B1

Reaction notes

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