IQ - Instituto de Química
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Navegando IQ - Instituto de Química por Autor "Andrade, Floyd Custódio Diniz"
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Item Hidrocalcogenação de derivados de álcoois propargílicos mediados por calcogenolatos de zinco(Universidade Federal de Goiás, 2014-02-28) Andrade, Floyd Custódio Diniz; Barros, Olga Soares do Rego; http://lattes.cnpq.br/8311808341863723; Kato, Lucilia; http://lattes.cnpq.br/1362891438631386; Barros, Olga Soares do Rego; Kato, Lucilia; Chagas, Rafael Pavão das; Cunha, Rodrigo Luiz Oliveira RodriguesOrganylzinc chalcogenolate mediated hydrochalcogenation of propargyl alcohols organylzinc chalcogenolate (chalcogen = sulfur, selenium and tellurium) prepared from the reductive cleavage of diorganyl dichalcogenide bonds by the Zn/NH4OH system led to organylzinc chalcogenolates that provide an alternative synthetic route to produce carbon-chalcogen bonds. This work presents new synthetic methodology and discusses the general aspects and limitations of organylzinc chalcogenolate to promote the hydrochalcogenetion of 2-alkyn-1-ol derivates leading mainly the Markovnikov allylic alcohols bearing a vinylic chalcogenide substituints. We investigated the chemo, regio- and stereoselctivity for this protocol in two different systems: in aqueous medium and in organic medium.