Microwave promoted one-pot synthesis of 2-aryl substituted 1,3,4-oxadiazoles and 1,2,4-oxadiazole derivatives using Al3+-K10 clay as a heterogeneous catalyst
An efficient, inexpensive method is developed for the one-potsynthesis of 2-aryl substituted 1,3,4-oxadiazoles and 1,2,4-oxadiazoles starting from acid hydrazides and trimethyl orthoformate under solvent-free, microwave conditions using a reusable Al3+-K10 montmorillonite clay as a heterogeneous catalyst. The novelty of the present study lies in the synthesis of oxadiazole and benzimidazole moieties
Synthesis of
<i>N</i>
‐Sulfonyl Amidines and 1,3,4‐Oxadiazoles through Electrochemical Activation of DMF
作者:Kingshuk Mahanty、Atreyee Halder、Suman De Sarkar
DOI:10.1002/adsc.202201019
日期:2023.1.10
Electrochemical routes for the synthesis of N-sulfonyl amidines and 1,3,4-oxadiazoles are reported through the activation of DMF molecule. Successful implementation of electro-redox on dehydrative coupling and oxidative cyclization reactions eliminates the necessity of stoichiometric chemical oxidants and minimizes the generation of reagent waste. Both protocols exhibited broad functional group tolerance