Rapid, efficient, simple and green procedure for the synthesis of 4,5-dihydro-1H-pyrazole-1-carbothioamides via the multicomponent reaction of aryl aldehydes, acetophenones and thiosemicarbazide in water in the presence of tetrabutylammonium hydroxide under microwave irradiation is reported.
Keywords: 4,5-Dihydro-1H-pyrazole-1-carbothioamides; Green chemistry; MCRs; Microwave irradiation; Multicomponent reaction; TBAOH; Water.