The pyrazolyl oxadiazoles are synthesized from arylsulfonylacetic acidmethylester and benzylsulfonylacetic acidmethylester. Preliminary antimicrobial screening of the compounds showed that bisheterocycles with a chloro-substituted benzyl moiety exhibited high activity.
A new class of bis(oxadiazolyl/thiadiazolyl/triazolylmethyl)sulfones were prepared by the cyclocondensation of sulfonyldiacetic acid with aryl acid hydrazide and arylmethanesulfonylacetic acid hydrazide.