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Bechamp reduction

Lianyungang Klinechem Co.,Ltd | Updated: Nov 29, 2018

The Bechamp reduction is used to reduce aromatic nitro compounds to their corresponding anilines, using iron and hydrochloric acid.[1]

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This reaction was originally used to produce large amounts of aniline for industry, but catalytic hydrogenation is the preferred method.[2] The Bechamp reaction is of interest as a route to iron oxide pigments.[3]

The reaction was first used by Antoine Béchamp to reduce nitronaphthalene and nitrobenzene in 1854.[4]

Reaction scope

Main article: Reduction of nitro compounds

The Bechamp reaction is broadly applicable to aromatic nitro compounds. Aliphatic nitro compounds are more difficult to reduce, often remaining as the hydroxylamine. Tertiary aliphatic nitro compounds, however, are converted in good yield to the amine compound using the Bechamp reduction.[5]

References

1.     Jump up^ Org React 2, 428 (1944).

2.     Jump up^ McKetta, John J. (1989). "Nitrobenzene and Nitrotoluene". Encyclopedia of Chemical Processing and Design: Volume 31 - Natural Gas Liquids and Natural Gasoline to Offshore Process Piping: High Performance Alloys. CRC Press. pp. 166–167. ISBN 978-0-8247-2481-8.

3.     Jump up^ Thomas Kahl, Kai-Wilfrid Schröder, F. R. Lawrence, W. J. Marshall, Hartmut Höke, Rudolf Jäckh "Aniline" in Ullmann's Encyclopedia of Industrial Chemistry 2007; John Wiley & Sons: New York.doi:10.1002/14356007.a02_303

4.     Jump up^ Béchamp, Antoine (1854). "De l'action des protosels de fer sur la nitronaphtaline et la nitrobenzine. nouvelle méthode de formation des bases organiques artificielles de Zinin". Annales de chimie et de physique. 42: 186–196.

5.     Jump up^ M. J. Leonard; A. R. Lingham; J. O. Niere; N. R. C. Jackson; P. G. McKay; H. M. Hϋgel (6 Mar 2014). "Alternative synthesis of the anti-baldness compound RU58841". RSC Advances. 4: 14143–14148. doi:10.1039/c4ra00332b.

 


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