The cyclization of 1,3-diaryl-2-azido-2-propen-1-ones with various alkynes in the presence of a catalytic amount of copper sulfate-sodium ascorbate in DMSO-water mixture under microwave irradiation led to the formation of (Z)-1,3-diaryl-2-(4-substituted-1H-1,2,3-triazol-1-yl)prop-2-en-1-ones. The structure and stereochemistry of the products have been elucidated by spectroscopic and single crystal X-ray analyses. All the newly synthesized compounds have been tested for their antibacterial activity against four strains of bacteria and found to have moderate to good inhibition.
Indium trichloride catalyzed regioselective synthesis of substituted pyrroles in water
A facile and regioselective synthesis of polysubstituted pyrroles from α-azido chalcones and 1,3-dicarbonylcompounds is described. Indium trichloride in water is found to be efficient in catalyzing this transformation.