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By using Fe 2(SO 4) 3·6H 2O/H 2SO 4 as the oxidation reagents for dehydrogenating aryl substituted semicarbazide to form azo compounds is described for first time.Eight azo compounds were prepared in excellent yields under mild condition.This method only needs simple instrument and short reaction time.
By using Fe 2 (SO 4) 3 · 6H 2O / H 2 SO 4 as the oxidation reagents for dehydrogenating aryl substituted semicarbazide to form azo compounds is described for first time. Light azo compounds were prepared in excellent yields under mild condition. This method only needs simple instrument and short reaction time.