1,3,4 - Thiadiazoles

1,3,4-Thiadiazoles is a five membered ring system containing one sulphur and two nitrogen atoms. 1,3,4-Thiadiazole was first described in 1882 by Fischer and further developed by Busch and his coworkers. Thiadiazols display anticarcinogenic, antimicrobial as well as antiviral activities. In this book several approaches for synthesis of 1,3,4-thiadiazoles and their biological activities have been collected in brief.