Pictet–Hubert_reaction

Phenanthridine

Phenanthridine

Chemical compound

Phenanthridine is a nitrogen heterocyclic compound that is the basis of DNA-binding fluorescent dyes through intercalation. Examples of such dyes are ethidium bromide and propidium iodide. It is an isomer of acridine.

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Phenanthridine was discovered by Amé Pictet and H. J. Ankersmit in 1891 by pyrolysis of the condensation product of benzaldehyde and aniline.[3] In the Pictet–Hubert reaction (1899) the compound is formed in a reaction of the 2-aminobiphenyl – formaldehyde adduct (an N-acyl-o-xenylamine) with zinc chloride at elevated temperatures.[4]

The reaction conditions for the Pictet–Hubert reaction were improved by Morgan and Walls in 1931, replacing the metal by phosphorus oxychloride and using nitrobenzene as a reaction solvent.[5] For this reason, the reaction is also called the Morgan–Walls reaction.[6]

The reaction is similar to the Bischler–Napieralski reaction and the Pictet–Spengler reaction.

References

  1. [1]
    International Union of Pure and Applied Chemistry (2014). Nomenclature of Organic Chemistry: IUPAC Recommendations and Preferred Names 2013. The Royal Society of Chemistry. p. 212. doi:10.1039/9781849733069. ISBN 978-0-85404-182-4.
  2. [2]
    Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, pp. 3–460, ISBN 0-8493-0594-2
  3. [3]
    Mittheilung Ueber das Phenanthridin Amé Pictet, H. J. Ankersmit Chemisches Laboratorium der Universität Genf Justus Liebigs Annalen der Chemie Volume 266 Issue 1–2, pp. 138–153 doi:10.1002/jlac.18912660107
  4. [4]
    Mittheilungen Ueber eine neue Synthese der Phenanthridinbasen Amé Pictet, A. Hubert Berichte der deutschen chemischen Gesellschaft Volume 29 Issue 2, pp. 1182–1189, 1896 doi:10.1002/cber.18960290206
  5. [5]
    CCCXXXV.—Researches in the phenanthridine series. Part I. A new synthesis of phenanthridine homologues and derivatives Gilbert T. Morgan, Leslie Percy Walls, J. Chem. Soc., 1931, 2447–2456 doi:10.1039/JR9310002447
  6. [6]
    Jie Jack Li (ed.), 2004, Name Reactions in Heterocyclic Chemistry, Wiley.
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