Selenium heterocycles. XLIII. Syntheses of 3,5-diaryl-1,2,4- thiadiazoles and 3,5-diaryl-1,2,4-selenadiazoles

Article abstract of DOI:10.1002/jhet.5570360412

Starting from readily available α-arylsulfonyl-α- bromoacetophenones 2 a series of 3,5-diaryl-1,2,4-thiadiazoles and 3,5-diaryl-1,2,4-selenadiazoles were prepared in moderate yield. Reaction of compounds 2 with thiourea or selenourea gave 2-amino-5-arylsu