Tetrazoles: LIII. Microwave-Activated Acylation of 5-Substituted Tetrazoles

The acylation of 5-aryl(hetaryl)tetrazoles with acetic and benzoic anhydrides under microwave irradiation gave the corresponding 2-substituted 5-methyl-and 5-phenyl-1,3,4-oxadiazoles in high yields. The use of microwave activation reduces the reaction temperature by 30-40C and shortens the reaction time by a factor of 5 to 7.