Síntese de 4-arilselenopirazóis e de [1,2,3]triazol[1,3,6]- dibenzotriazoninas.

Abstract

In this work we describe for the first time a method for the synthesis of 4-arylselanylpyrazoles 3 from the condensation reaction of αarylselanylcetoaketones 1 with phenylhydrazines 2 using glycerol as solvent, at 60 °C, under N2 atmosphere in the absence of catalysts. Providing their respective products in good yields, 72-84%. We also describe for the first time a method to obtain the 1-aryl-15Hdibenzo[d,h][1,2,3]triazolo[1,5-a][1,3,6]triazonines 6, by Ullmann reaction catalyzed by copper, under microwave irradiation, from the reaction between 5- iodine-1,2,3-triazole 4 with diamines 5. The method allowed the synthesis of products 8 in good to excellent yields, 52-98%.