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Relevant academic research and scientific papers

Clean synthesis of azo compounds using Magtrieve in the ionic liquid [bmim][Br]

A series of azo compounds, N-aryl-2-phenyldiazenecarboxamides, and 4-substituted-1,2,4-triazoline-3,5-diones, were synthesized using Magtrieve, a magnetically retrievable and recyclable oxidant, in the ionic liquid [bmim][Br] under neutral condition. This procedure has several advantages, such as greenness, mild reactions, simple manipulation, and reusability of reagent and solvent.

Phase transfer catalyzed dehydrogenation synthesis of azo ureas from aryl substituted semicarbazide

Phase transfer catalyzed dehydrogenation synthesis azo ureas compounds have been studied. Ten of the compounds were synthesized by the reaction of aryl substituted semicarbazide compounds with phase transfer catalysts -- 'Galvinoxyl' radical between two p

A simple and efficient method for the oxidation of aryl substituted semicarbazide with NaNO2/NaHSO4-H2O/SiO 2 under mild conditions

In this paper, eighteen aryl substituted semicarbazide underwent efficient oxidation to aryl azo compounds using NaNO2/NaHSO4· H2O/SiO2 under mild conditions with excellent yields.

A convenient, rapid and new catalyst oxidation method with KClO3/H2SO4/FeSO4 for preparing aryl azo compounds

Using potassium chlorate, sulfuric acid and ferrous sulfate as a catalytic oxidation system to oxidize the aryl substituted semicarbazide to prepare azo compounds in one phase have been described first time in this paper. Fourteen azo compounds have been

A convenient solid state method for preparing aryl azo compounds

A convenient solid state reaction using ferric nitrate to oxidize substituted semicarbazide for preparing azo ureas has been reported for the first time. Eight phenyldiazenecarboxylic acid anilide derivatives, have been synthesized in excellent yields wit

The new synthesis of azo compounds by 4-hydroxy-2,2,6,6-tertramethyl-1- piperidinyloxyl as the phases transfer dehydrogenation catalyst

Using 4-hydroxy-2,2,6,6-tertramethyl-1-piperidinyloxyl as the phases transfer dehydrogenation catalyst to prepare azo compounds is reported first time, ten N, 2-diaryl diazenecarboxamides were synthesized in high yield under mild condition. A possible mec

A rapid solid-state synthesis of diazenecarboxamide-azo compounds using ferric nitrate and sodium bisulfate as an oxidation system

A new and rapid solid-state method for the preparation N-aryl-2-phenyl-diazenecarboxamide azo compounds from aryl substituted semicarbazides is reported. With this method, nine diazenecarboxamide compounds have been synthesised in good to excellent yields

An efficient method for the oxidation of aryl substituted semicarbazides to aryl azo compounds with NaNO2-Ac2O

In this paper 18 aryl substituted semicarbazides undergo rapid oxidation to the corresponding aryl azo compounds using NaNO2-acetic anhydride as a novel oxidizing agent under mild conditions for the first time.

Using N-bromosuccinimide and pyridine as the oxidation system to prepare carbonyl and aryl azo compounds

Using N-bromosuccinimide and pyridine as the oxidation system to dehydrogenate aryl substituted semicarbazide or carbazide to form azo compounds in one phase is described first time in this paper. Nineteen azo compounds have been prepared in excellent yie