Chlorine → HCID 12445115, compound

HRID 1166021Notes

Reaction equation

HRID 1166021 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-fadd21cfd8c446338dcf4771ccea57cf
Source dataset
uspto-grants-2003_09
Patent number
US06613456B2

Reaction notes

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