Conventional and microwave-assisted synthesis of pyrazole derivatives and screening of their antibacterial and antifungal activities

摘要

5-{2'-Chioro-6'-melhyl-(3'-quinolyl)}-3-(substitutedphenyl) pyrazole 3a-j, 5-{2'-chloro-6'-methyl-(3'-quinolyl)}-3-(substitutedphenyl) pyrazole carboxamide 4a-j and 5-[2'-chloro-6'-methyl-(3'-quinolyl))-3-(substitutedphenyl) pyrazole carbothiamide 5a-j have been synthesized by the reaction of 3-(2'-chloro-6'-methyl(3'-quinolyl))-1-(substitutedphenyl)prop-2-en-1-one 2a-j with hydrazine hydrate, semicarbazide hydrochloride and thiosemicarbazide hydrochloride respectively. These compounds have been screened for their antibacterial and antifungal activities against different microorganisms. The structures of novel synthesized compounds have been established on the basis of elemental analysis, IR, ~1H NMR and mass spectral data.