Cyclopentadiene → Dicyclopentadiene

HRID 2071710Notes

Reaction equation

HRID 2071710 reaction equation
[CH:1]1[CH2:5][CH:4]=[CH:3][CH:2]=1.[CH:6]1[CH2:10][CH2:9][CH2:8][CH:7]=1>C1CCCC1>[CH2:2]1[CH:1]2[CH:8]3[CH:7]=[CH:6][CH:10]([CH:5]2[CH:4]=[CH:3]1)[CH2:9]3

Participants

4

Reactant 2

HCID 7612CyclopentadieneHCID 8882Cyclopentene

Product 1

HCID 6492Dicyclopentadiene

Reagents, catalysts & solvents 1

HCID 9253CyclopentaneSolvent

Procedure

In a process for the production of cyclopentene from dicyclopentadiene which comprises splitting dicyclopentadiene under heat to form cyclopentadiene; partially hydrogenating the cyclopentadiene to form a crude cyclopentene containing an impurities fraction boiling at a higher boiling point than cyclopentene and containing cyclopentane; purifying the crude cyclopentene by distillation in which said impurities fraction is separated from the crude cyclopentene; the improvement which comprises recycling at least part of the separated impurities fraction as the impurities fraction is produced in said distillation to the dicyclopentadiene splitting stage, said separated impurities fraction comprising predominantly cyclopentane.

Workup

  1. customto form a crude cyclopentene containing an impurities fraction
  2. custompurifying the crude cyclopentene
  3. distillationby distillation in which
  4. customis separated from the crude cyclopentene

Sources & evidence

ORD record
ord-c6a2e1ec7553431c98ec24b594753e95
Source dataset
uspto-grants-1977_09
Patent number
US04048242

Reaction notes

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