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Chemistry of Heterocyclic Compounds

, Volume 20, Issue 4, pp 389–393 | Cite as

Porphyrins. 17. Oxidation of porphyrins with a cyclopentane ring on the surface of silica gel. Chemical properties of hydroxycyclopentanoporphyrins

  • G. V. Ponomarev
  • A. M. Shul'ga
Article
  • 42 Downloads

Abstract

It was established that porphyrins with a cyclopentane ring are oxidized on the surface of silica gel by air oxygen to give 51-hydroxy-31,51-cycloporphyrins in 30–35% yields. Heating 51-hydroxy-31methyl-31,51-cycloheptaethyl-porphyrin in CF3COOH leads to splitting out of water and prototropic rearrangement of the intermediate unstable cyclopentenoporphyrin to the previously unknown exo-methylenecyclopentanoporphyrin.

Keywords

Oxidation Oxygen Organic Chemistry Chemical Property Porphyrin 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Literature cited

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Copyright information

© Plenum Publishing Corporation 1984

Authors and Affiliations

  • G. V. Ponomarev
    • 1
  • A. M. Shul'ga
    • 1
  1. 1.Institute of BiophysicsMinistry of Public Health of the USSRMoscow

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