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Hydrodealkylation is a chemical reaction that often involves reacting an aromatic hydrocarbon, such as toluene, in the presence of hydrogen gas to form a simpler aromatic hydrocarbon devoid of functional groups. An example is the conversion of 1,2,4-trimethylbenzene to xylene.[1] This chemical process usually occurs at high temperature, at high pressure, or in the presence of a catalyst. These are predominantly transition metals, such as chromium or molybdenum.
Examples

Toluene hydrodealkylation to benzene
Transalkylation

References

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Functional groups
Hydrocarbons
(only C and H)
  • Alkyl
    • Methyl
    • Ethyl
    • Propyl
    • Cyclopropyl
    • Butyl
    • Pentyl
  • Methylene
    • Bridge
    • Methine
  • Alkene
    • Vinyl
    • Allyl
    • 1-Propenyl
    • Crotyl
    • Allene
    • Cumulene
  • Phenyl
  • Benzyl
  • Alkyne
  • Carbene
Only carbon,
hydrogen,
and oxygen
(only C, H and O)
R-O-R
  • Acetal
  • Alkoxy
    • Methoxy
  • Ether
    • Enol ether
    • Epoxide
  • Peroxy
    • Hydroperoxy
    • Dioxiranes
  • Ethylenedioxy
  • Alcohol
  • Methylenedioxy
carbonyl
  • Acyl
    • Acetyl
    • Acryloyl
    • Benzoyl
  • Aldehyde
    • Ketene
  • Ketone
  • Ynone
carboxy
  • Carboxyl
    • Acetoxy
    • Anhydride
  • Ester
    • Orthoester
Only one
element,
not being
carbon,
hydrogen,
or oxygen
(one element,
not C, H or O)
Nitrogen
  • Amine
    • Enamine
    • Ammonium
  • Hydrazo
  • Nitrene
  • Imine
  • Oxime
  • Hydrazone
  • Azo
  • Amide
  • Imidate
  • Amidine
  • Carbamate
  • Imide
  • Nitrile
  • Isonitrile
  • Cyanate
  • Isocyanate
  • Nitrate
  • Nitrite
  • Nitro
  • Nitroso
Phosphorus
  • Phosphate
    • Phosphodiester
  • Phosphonate
    • Phosphite
  • Phosphonous
  • Phosphinate
  • Phosphine oxide
  • Phosphine
    • Phosphonium
  • Phosphaalkene
  • Phosphaalkyne
Sulfur
  • Thiol
  • Sulfide
    • Sulfonium
  • Persulfide
  • Disulfide
  • Sulfenic acid
  • Thiosulfinate
  • Sulfoxide
  • Thiosulfonate
  • Sulfinic acid
  • Sulfone
  • Sulfonic acid
  • Thioketone
  • Thial
  • Thioester
  • Thionoester
  • Thioxanthate
  • Xanthate
Boron
  • Boronic acid
Selenium
  • Selenol
  • Selenonic acid
  • Seleninic acid
  • Selenenic acid
  • Selone
Tellurium
  • Tellurol
  • Telluroketone
Halo
  • Haloalkane
    • Fluoroethyl
    • Trifluoromethyl
    • Trichloromethyl
    • Trifluoromethoxy
    • Hypervalent iodine
  • Vinyl halide
    • Iodide
  • Acyl halide
    • Chloride
  • Perchlorate
Other

Chemistry Encyclopedia

World

Index

Hellenica World - Scientific Library

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