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|Título:||NMR in the epoxidation of (E,E)-Cinnamylideneacetophenones|
|Autor:||Santos, Clementina M.M.|
|Citação:||Santos, Clementina M.M.; Silva, Artur; Cavaleiro, José (2006) - NMR in the epoxidation of (E,E)-Cinnamylideneacetophenones. In IV Congresso Ibérico de Espectroscopia. Ciudad Real|
|Resumo:||The epoxidation of cinnamylideneacetophenones
have been already performed with hydrogen
peroxide as an oxidant in Julia's method  and with dimethyldioxirane , however no studies were
performed using salen Mn(III) complexes as
The epoxidation of cinnatnylideneacetophenones have been already performed with hydrogen peroxide as oxidant in Julia's method  and with dimethyldioxirane , however no studies were performed using salen Mn(lll) complexes as catalysts. On these basis, we developed a study on the epoxidation of cinnamylideneacetophenones 1, catalyzed by coinmercially available Jacobsen's catalyst [salen Mn(IIl)] and using iodosy I benzene and hydrogen peroxide as oxidants. The structure of the epoxidation products 2-5, their stereochemistry and the regiochemistry of the monoepoxides 2 fotmation were established by ID and 2D NMR spectroscopy. These studies will be presented and discussed.
|Aparece nas colecções:||PTV - Resumos em Proceedings Não Indexados ao ISI/Scopus|
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