Facile Synthesis of Azo Compounds from Aromatic Nitro Compounds using Magnesium and Triethylammonium Formate

2004 ◽  
Vol 57 (6) ◽  
pp. 609 ◽  
Author(s):  
G. R. Srinivasa ◽  
K. Abiraj ◽  
D. Channe Gowda
Keyword(s):  
Room Temperature ◽  
Nitro Compounds ◽  
Single Step ◽  
Azo Compounds ◽  
Facile Synthesis ◽  
Aromatic Nitro Compounds ◽  
Aromatic Nitro

Magnesium/triethylammonium formate is a convenient reagent for the reduction of aromatic nitro compounds to corresponding symmetrically substituted azo compounds. Various azo compounds containing additional reducible substituents, including halogen, nitrile, acid, phenol, ester, and methoxy functions, have been synthesized in a single step by the use of this reagent. The conversion is reasonably fast, clean, high yielding, and occurs at room temperature in methanol.

scholarly journals A hydroquinone based palladium catalyst for room temperature nitro reduction in water

RSC Advances ◽  
2014 ◽  
Vol 4 (66) ◽  
pp. 35233-35237 ◽  
Author(s):  
Alok Kumar ◽  
Kallol Purkait ◽  
Suman Kr. Dey ◽  
Amrita Sarkar ◽  
Arindam Mukherjee
Keyword(s):  
Palladium Catalyst ◽  
Room Temperature ◽  
Catalytic Reduction ◽  
Nitro Compounds ◽  
Aromatic Nitro Compounds ◽  
Aromatic Nitro ◽  
Nitro Reduction

A PdII–hydroquinone complex shows efficient catalytic reduction of aromatic nitro compounds in water at room temperature followed by Suzuki–Miyaura coupling.

Reduction of Aromatic Nitro Compounds to Azoxy Compounds with Sodium Borohydride

2014 ◽  
Vol 1033-1034 ◽  
pp. 18-21
Author(s):  
Ke Ying Cai ◽  
Ying Mei Zhou
Keyword(s):  
Sodium Hydroxide ◽  
Sodium Borohydride ◽  
Room Temperature ◽  
Nitro Compounds ◽  
Reaction Conditions ◽  
Azoxy Compounds ◽  
Aromatic Nitro Compounds ◽  
Aromatic Nitro ◽  
Actived Carbon

The reduction of aromatic nitro compounds to corresponding azoxy compounds with sodium borohydride was catalyzed by BiO(OH)/actived carbon (AC), which was prepared by equivalent-volume impregnation. The influences of catalyst, sodium borohydride and sodium hydroxide amount were investigated with 10 mmol of nitrobenzene as substrate in methanol at room temperature. The suitable reaction conditions are as follows: 0.2 g of catalyst, 10 mmol of sodium borohydride and 0.1 g of sodium hydroxide. Under the conditions, the seven aromatic nitro compounds were reduced to corresponding azoxy compounds with 27%-90% yields. Moreover, slight deactivation was observed after nine cycles of the catalyst.

Simple and Efficient Reduction of Aromatic Nitro Compounds Using Recyclable Polymer-Supported Formate and Magnesium

2005 ◽  
Vol 58 (2) ◽  
pp. 149 ◽  
Author(s):  
Keelara Abiraj ◽  
Gejjalagere R. Srinivasa ◽  
D. Channe Gowda
Keyword(s):  
Room Temperature ◽  
Low Cost ◽  
Nitro Compounds ◽  
Hydrogen Donor ◽  
Hydroxyl Groups ◽  
Chromatographic Purification ◽  
Aromatic Nitro Compounds ◽  
Efficient Reduction ◽  
Polymer Supported ◽  
Aromatic Nitro

Aromatic nitro compounds were chemoselectively reduced to the corresponding amines using recyclable polymer-supported formate as a hydrogen donor in the presence of low-cost magnesium powder at room temperature. Use of the immobilized hydrogen donor affords the product amine in excellent yield (90–97%) without the need for any chromatographic purification steps. This method was found to be highly facile with selectivity over several other functional groups, such as halogen, alkene, nitrile, carbonyl, ester, amide, methoxy, phenol, and hydroxyl groups.

Schiff Base Pt(II) Complex Intercalated Montmorillonite: A Robust Catalyst for Hydrogenation of Aromatic Nitro Compounds at Room Temperature

2011 ◽  
Vol 50 (13) ◽  
pp. 7849-7856 ◽  
Author(s):  
Kulamani Parida ◽  
Guru Bishwa Bidita Varadwaj ◽  
Swagatika Sahu ◽  
Prakash Chandra Sahoo
Keyword(s):  
Schiff Base ◽  
Room Temperature ◽  
Nitro Compounds ◽  
Aromatic Nitro Compounds ◽  
Aromatic Nitro
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