Bucherer reaction

The Bucherer reaction in organic chemistry is the reversible conversion of a naphthol to a naphthylamine in the presence of ammonia and sodium bisulfite.[1][2][3][4][5] The reaction is widely used in the synthesis of dye precursors aminonaphthalenesulfonic acids.[6]

C10H7-2-OH + NH3 ⇌ C10H7-2-NH2 + H2O

The French chemist Robert Lepetit was the first to discover the reaction in 1898. The German chemist Hans Theodor Bucherer (1869–1949) discovered (independent from Lepetit) its reversibility and its potential especially in industrial chemistry. Bucherer published his results in 1904 and his name is connected to this reaction. The organic reaction also goes by the name Bucherer-Lepetit reaction or (incorrectly) the Bucherer-Le Petit reaction.

The reaction is used to convert 1,7-dihydroxynaphthalene into 7-amino-1-naphthol and 1-aminonaphthalene-4-sulfonic acid into 1-hydroxynaphthalene-4-sulfonic acid. It is also useful for transamination reactions of 2-aminonaphthalenes.[6]

  1. ^ H. Bucherer (1904). "Über die Einwirkung schwefligsaurer Salze auf aromatische Amido- und Hydroxylverbindungen". J. Prakt. Chem. (in German). 69 (1): 49–91. doi:10.1002/prac.19040690105.
  2. ^ Seeboth, Habil H. (1967). "The Bucherer Reaction and the Preparative Use of its Intermediate Products". Angew. Chem. Int. Ed. 6 (4): 307–317. doi:10.1002/anie.196703071.
  3. ^ Drake, Nathan L. (1942). "The Bucherer Reaction". In Adams, Roger (ed.). Organic Reactions. Vol. 1. pp. 63–90. doi:10.1002/0471264180.or001.05. ISBN 9780471264187.
  4. ^ Pötsch, Winfried R.; Fischer, Annelore; Müller, Wolfgang (1988). Lexikon bedeutender Chemiker (in German). Leipzig: Bibliographisches Institut. ISBN 9783323001855.
  5. ^ Smith, Michael B.; March, Jerry (2007), Advanced Organic Chemistry: Reactions, Mechanisms, and Structure (6th ed.), New York: Wiley-Interscience, ISBN 978-0-471-72091-1
  6. ^ a b Booth, Gerald (2005). "Naphthalene Derivatives". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a17_009. ISBN 3527306730.