Hypervalent iodine (III)-mediated oxidation of aryl sulfonylhydrazones: A facile synthesis of N-aroyl-N′-acyl arylsulfonylhydrazides
作者:E. Ramakrishna、Kapil Dev、Saransh Wales Maurya、Ibadur Rahman Siddiqui、Rakesh Maurya
DOI:10.1016/j.tetlet.2016.12.085
日期:2017.2
We have developed a novel and efficient method for the oxidation of aryl sulfonylhydrazones to N-aroyl-N′-acyl arylsulfonylhydrazides, using hypervalentiodine (III) reagent in good yields at room temperature.
Ligand-free Cu(<scp>ii</scp>)-mediated aerobic oxidations of aldehyde hydrazones leading to N,N′-diacylhydrazines and 1,3,4-oxadiazoles
作者:Lei Liu、Suliu Feng
DOI:10.1039/c7ob00042a
日期:——
A Cu(II)-mediated synthesis of N,N′-diacylhydrazines and 1,3,4-oxadiazoles from aldehyde hydrazones has been developed. This is the first time that the synthesis of N,N′-diacylhydrazines and 1,3,4-oxadiazoles using N,N-dimethylamides as the acylation reagent and O2 in air as the oxidation reagent is reported. These reactions offered several advantages including simple workups, ligand-free inexpensive