Khan, Faiz Ahmed ; Dash, Jyotirmayee ; Sudheer, Ch. ; Gupta, Rakesh Kumar (2003) Chemoselective reduction of aromatic nitro and azo compounds in ionic liquids using zinc and ammonium salts Tetrahedron Letters, 44 (42). pp. 7783-7787. ISSN 0040-4039
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.tetlet.2003.08.080
Abstract
Nitroarenes were chemoselectively reduced to the corresponding amines using zinc and aqueous ammonium salts in ionic liquids as a safe and recyclable reaction medium. Our results specify the effect of ammonium salts in the process; the combination of Zn/NH4Cl in [bmim][PF6] or Zn/HCO2NH4 in [bmim][BF4] were the suitable conditions for the reduction of nitroarenes. Azobenzenes were also smoothly reduced to hydrazobenzenes with Zn/HCO2NH4 (aq.) in recyclable [bmim][BF4] without any over reduction to the corresponding anilines.
Item Type: | Article |
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Source: | Copyright of this article belongs to Elsevier Science. |
Keywords: | Ionic Liquids; Zinc; Reduction; Nitroarenes; Anilines; Azo Compounds; Hydrazobenzenes |
ID Code: | 79667 |
Deposited On: | 27 Jan 2012 14:50 |
Last Modified: | 27 Jan 2012 14:50 |
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