PhSeBr-catalyzed selective addition of thiols to α,β- unsaturated carbonyl compounds: regioselective synthesis of thioacetals vs. β-mercapto ketones
dc.creator | Schneider, Caroline Cassalha | |
dc.creator | Manarin, Flávia | |
dc.creator | Panatieri, Rodrigo Barroso | |
dc.creator | Barros, Olga Soares do Rego | |
dc.creator | Zeni, Gilson Rogério | |
dc.date.accessioned | 2018-10-19T11:03:58Z | |
dc.date.available | 2018-10-19T11:03:58Z | |
dc.date.issued | 2010-07 | |
dc.description.abstract | We present herein results on the PhSeBr-catalyzed addition of thiols to α,β-unsaturated carbonyl compounds under mild conditions to afford regioselectivily β-mercapto ketones or thioacetals in high yields and selectivity. The reaction was highly controlled by the temperature in which, the 1,4-addition products were obtained when the temperature was –20 °C, conversely when the reaction was carried out at reflux, the thioacetals were obtained as a sole product. The developed protocol stands a wide range of functional groups, in which alkyl, benzyl and aryl with neutral, electron deficient and electron rich substituents on the aromatic ring. | pt_BR |
dc.description.resumo | Apresentamos aqui nossos resultados da adição de tióis, catalisada por PhSeBr, a compostos carbonílicos α,β-insaturados sob condições brandas para obter regiosseletivamente β-mercapto cetonas ou tioacetais com altos rendimentos e seletividade. A reação foi principalmente controlada pela temperatura, na qual os produtos de adição 1,4 foram obtidos à temperatura de –20 oC. Inversamente quando a reação foi realizada sob refluxo, tioacetais foram obtidos como único produto. O método admite diversos grupos funcionais, como alquilicos, benzilicos e arilicos com substituintes neutros, deficientes e ricos em elétrons no anel aromático. | pt_BR |
dc.identifier.citation | SCHNEIDER , Caroline C. et al. PhSeBr-catalyzed selective addition of thiols to α,β- unsaturated carbonyl compounds: regioselective synthesis of thioacetals vs. β-mercapto ketones. Journal of the Brazilian Chemical Society, Campinas, v. 21, n. 11, p. 2088-2092, July 2010. | pt_BR |
dc.identifier.doi | 10.1590/S0103-50532010001100009 | |
dc.identifier.issn | 0103-5053 | |
dc.identifier.issn | e- 1678-4790 | |
dc.identifier.uri | http://repositorio.bc.ufg.br/handle/ri/16211 | |
dc.language.iso | eng | pt_BR |
dc.publisher.country | Brasil | pt_BR |
dc.publisher.department | Instituto de Química - IQ (RG) | pt_BR |
dc.rights | Acesso Aberto | pt_BR |
dc.subject | Thioacetals | pt_BR |
dc.subject | β-mercapto ketones | pt_BR |
dc.subject | Chalcogenides | pt_BR |
dc.title | PhSeBr-catalyzed selective addition of thiols to α,β- unsaturated carbonyl compounds: regioselective synthesis of thioacetals vs. β-mercapto ketones | pt_BR |
dc.type | Artigo | pt_BR |
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