Toluene → Naphthalene

HRID 1450120Notes

Reaction equation

HRID 1450120 reaction equation
N1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH:4]=[CH:3][CH:2]=1.[C:11]1(C)C=CC=CC=1>B(F)(F)F>[CH:4]1[C:5]2[C:10](=[CH:9][CH:8]=[CH:7][CH:6]=2)[CH:11]=[CH:2][CH:3]=1

Participants

4

Reactant 2

HCID 1140TolueneHCID 7047Quinoline

Product 1

HCID 931Naphthalene

Reagents, catalysts & solvents 1

HCID 6356Boron trifluorideCatalyst

Procedure

Naphthalene was polymerized at a temperature of from 200° to 300° C. in the presence of a HF.BF3 catalyst. After the reaction, the catalyst was recovered in a gas state, and a low boiling point component was removed to obtain a pitch. The optically anisotropic phase was 2 volume % as observed under a polarization microscope, the softening point was 176° C., the quinoline-insoluble content was 1.6% by weight, and the toluene-insoluble content was 34% by weight.

Workup

  1. customAfter the reaction
  2. customthe catalyst was recovered in a gas state
  3. customa low boiling point component was removed
  4. customto obtain a pitch
  5. customwas 176° C.

Sources & evidence

ORD record
ord-71596b2d3b8a4d0a9c563f3cab0430b9
Source dataset
uspto-grants-1997_02
Patent number
US05601794

Reaction notes

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