Síntese de selenetos e teluretos de diorganoíla via catálise de prata

Abstract

In this thesis, the synthesis of alkyl/aryl selenides and tellurides will be described through the reaction between dialkyl/diaryl dichalcogenides and boronic acids in the presence of silver nitrate as catalyst (Scheme 1). Scheme 1 In these works it was possible to obtain a series of symmetric and unsymmetrical chalcogenides through a fast and efficient methodology, obtaining the products of interest in good to excellent yields (28-99%), in reaction times ranging from 2 to 24 h. From the reaction studies it was possible to propose a mechanism to obtain the selenides and tellurides, presenting the structure [Ph2Y2Ag(III)]NO3- A as a key intermediate in the reaction, which was detected by high mass spectrometry resolution (HRMS).