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N-tosyl-nitropyrroles as dienophiles in polar cycloaddition reactions developed in protic ionic liquids.
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1  Quimica Organica/Facultad de Ingenieria Quimica/UNL

Abstract: N-Tosyl-2-nitropirrole and N-Tosyl-3-nitropirrole reacts with poorly and activated dienes using protic ionic liquids as reaction media. They exhibit a dienophile character producing the corresponding indoles through a Diels-Alder process. In all cases the presence of protic ionic liquids as reaction media improve the yields respect to use of molecular solvent, while the temperature and the reaction time decrease.
Keywords: Nitropyrroles, Indole, Ionic Liquid, Diels-Alder