AN EFFICIENT METHOD FOR THE SYNTHESIS OF α,β-UNSATURATED ACYL AZO COMPOUNDS WITH NaNO<sub>2</sub>/NaHSO<sub>4</sub>· H<sub>2</sub>O/SiO<sub>2</sub>
作者:Xiao-Chuan Li、Yu-Lu Wang、Jin-Ye Wang
DOI:10.1081/scc-120006461
日期:2002.1
ABSTRACT A combination of sodium hydrogen sulfate and sodium nitrite in the presence of SiO2 was used as an effective oxidizing agent for the oxidation of aryl substituted α,β-unsaturated acyl hydrazides to their corresponding azo compounds at room temperature with excellent yields.
ABSTRACT Eight new-typed α,β-unsaturated acyl azo compounds were prepared for the first time using NaBrO3/H2SO4 as the oxidant with simple stirring apparatus at room temperature. NaBrO3 was first reported as an efficient dehydrogenating agent in this paper.
A Simple and Efficient Method for the Synthesis of α,β-Unsaturated Acyl Azo Compounds with NaNO<sub>2</sub>-Acetic Anhydride Under Mild Conditions
作者:Xiao-Chuan Li、Yu-Lu Wang、Jin-Ye Wang
DOI:10.1002/jccs.200200033
日期:2002.4
In this paper, eight aryl substituted α,β-unsaturated acyl hydrazides undergo efficient oxidation to α,β-unsaturated acyl azo compounds using NaNO 2 -acetic anhydride under mild conditions with excellent yields.