531-5363-Aryl-5-(benzofuran-2-yl)acylthio-1,2,4-triazoles
1a-h have been prepared by
condensation of 2-(2-bromoacetyl)benzofurans and various
3-aryl-5-mercapto-1,2,4-triazoles under thermal conditions as well as using
microwave irradiations and grinding technique.
3-Aryl-5-(benzofuran-2-yl)acylthio-1,2,4-triazoles on cyclisation using
polyphosphoric acid under microwave irradiations give
2-aryl-5-(benzofuran-2-yl)-thiazolo[3,2-b][1,2,4]triazoles
2a-h. Preparation of compounds 1a-h using grinding technique and then
cyclisation to 2a-h are in
accordance to green procedures as these avoid use of hazardous organic solvents
during the reaction as well as at its work-up stage. The antibacterial activity
of these compounds has been described