A Simple and Efficient Method for the Oxidation of Aryl Substituted Semicarbazide with NaNO<sub>2</sub>/NaHSO<sub>4</sub>·H<sub>2</sub>O/SiO<sub>2</sub>under Mild Conditions
作者:Xiao-Chuan Li、Yu-Lu Wang、Jin-Ye Wang
DOI:10.1002/jccs.200200062
日期:2002.6
In this paper, eighteen aryl substituted semicarbazide underwent efficient oxidation to aryl azo compounds using NaNO 2 /NaHSO 4 .H 2 O/SiO 2 under mild conditions with excellent yields.
A Convenient, Rapid and New Catalyst Oxidation Method with KClO<sub>3</sub>/H<sub>2</sub>SO<sub>4</sub>/FeSO<sub>4</sub>for Preparing Aryl Azo Compounds
作者:Cai-lan Wang、Yu-lu Wang、Xiao-yang Wang、Jian-ping Li、Dong-lan Ma、Hong Wang
DOI:10.1080/00397919708007294
日期:1997.11
potassium chlorate, sulfuric acid and ferrous sulfate as a catalytic oxidation system to oxidize the aryl substituted semicarbazide to prepareazocompounds in one phase have been described first time in this paper. Fourteen azocompounds have been synthesized in excellent yields(>90%). This method only needs cheap reagents, simple instrument and short reaction time. A possible mechanism has been suggested
A Simple, Efficient and New Method for Preparing<i>N</i>-Aryl-2-Phenyldiazenecarboxamide
作者:Cailan Wang、Yulu Wang、Xiaoyang Wang、Jianping Li、Hong Wang
DOI:10.1002/jccs.199900018
日期:1999.2
AbstractUsing ferric chloride to oxidize aryl substituted semicarbazide for preparing azo compounds has been described for the first time in this paper. Nine azo compounds have been synthesized in a good to excellent yield (≥88%). This method only needs cheap reagents, simple instruments and a short reaction time.
Li, Xiao-Chuan; Wang, Yu-Lu; Wang, Jin-Ye, Journal of Chemical Research - Part S, 2002, # 6, p. 284 - 285
作者:Li, Xiao-Chuan、Wang, Yu-Lu、Wang, Jin-Ye
DOI:——
日期:——
AN EFFICIENT OXIDATION ARYLSEMICARBAZIDES TO THE AZO UREAS