Dicyclopentadiene → 2,3,3a,4-Tetrahydro-1H-indene

HRID 864879Notes

Reaction equation

HRID 864879 reaction equation
[CH:1]([CH:3]1[CH2:8][CH:7]2[CH2:9][CH:4]1[CH:5]=[CH:6]2)=[CH2:2].C1C2C3C=CC(C2C=C1)C3>>[CH2:8]1[C:3]2[CH:4]([CH2:5][CH:6]=[CH:2][CH:1]=2)[CH2:9][CH2:7]1

Participants

3

Reactant 2

HCID 6492DicyclopentadieneHCID 182735-Vinyl-2-norbornene

Product 1

HCID 1899812,3,3a,4-Tetrahydro-1H-indene

Procedure

The fraction (C-1) is fed to the fourth distillation column, and rectified at a column top pressure of 0.08 atmosphere, a column bottom pressure of 0.09 atmosphere, and a reflux ratio of 30. A fraction containing components having a boiling point lower than that of 5-vinyl-2-norbornene is obtained from the column top, and a fraction containing 5-vinyl-2-norbornene, dicyclopentadiene and tetrahydroindene is obtained from the column bottom. Further, the fraction from the column bottom is fed to the fifth distillation column (distillation "d1 "), and rectified at a column top pressure of 0.03 atmosphere, a column bottom pressure of 0.06 atmosphere, and a reflux ratio of 4.6. Component (D-1) composed mainly of 5-vinyl-2-norbornene is obtained from the column top, and component (D-2) composed mainly of dicyclopentadiene is obtained from the column bottom. The fraction (D-2) is recycled to the decomposition reactor.

Workup

  1. distillationThe fraction (C-1) is fed to the fourth distillation column
  2. additionA fraction containing components
  3. customis obtained from the column top

Sources & evidence

ORD record
ord-6f700f945875485f935075e7fb32646d
Source dataset
uspto-grants-1996_10
Patent number
US05565069

Reaction notes

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