Estudo da reatividade de Fenilcalcogenolatos de Índio(III)

• Ano de defesa: 2011
• Autor(a) principal: Castro, Liérson Borges de
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Santa Maria; BR; Química; UFSM; Programa de Pós-Graduação em Química
• Palavras-chave em Português: Fenilcalcogenolatos de índio(III); Hidrocalcogenação Markovnikov; Organil fenilcalcogenetos; Hidroxisselenetos; Extrusão de telúrio; Indium(III) benzenechalcogenolates; Markovnikov hydrochalcogenation; Organyl phenyl chalcogenides; β-hydroxy selenides; Extrusion of tellurium; CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA
• Link de acesso: http://repositorio.ufsm.br/handle/1/4205

Indium(III) benzenechalcogenolates (chalcogen = sulfur, selenium) prepared from elemental indium and diphenyl dichalcogenide provide an alternative synthetic route to produce carbon-chalcogen bonds. These compounds promote the regioselective hydrochalcogenation of terminal aminoalkynes to produce the Markovnikov adducts; provide a pratical method to prepare organyl phenyl chalcogenides from organyl halides; and their reaction with vinylarenes in aqueous media produces the respectives β-hydroxy selenides. Ditellurides present a different performance compared to others studied dichalcogenides. Indium(I) salts react with tellurium compounds and through extrusion of one tellurium atom produce diaryl tellurides. This work presents new synthetic methodologies and discusses the general aspects and limitations of indium chalcogenolates in the different systems investigated.