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A green one-pot four-component strategy has been developed for the synthesis of [1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide derivatives using an amine, 2,2,6-trimethyl-4H-1,3-dioxin-4-one, an aldehyde, and 3-amino-1,2,4-triazole in the presence of a catalytic amount of p-toluenesulfonic acid in water within 4–6 h.
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.
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