Santos, Clementina M.M.Silva, ArturCavaleiro, José2011-02-162011-02-162006Santos, Clementina M.M.; Silva, Artur; Cavaleiro, José (2006). NMR in the epoxidation of (E,E)-Cinnamylideneacetophenones. In IV Congresso Ibérico de Espectroscopia. Ciudad Realhttp://hdl.handle.net/10198/3425The epoxidation of cinnamylideneacetophenones have been already performed with hydrogen peroxide as an oxidant in Julia's method [1] and with dimethyldioxirane [2], however no studies were performed using salen Mn(III) complexes as catalysts.The epoxidation of cinnatnylideneacetophenones have been already performed with hydrogen peroxide as oxidant in Julia's method [1] and with dimethyldioxirane [2], 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.engconference object