Lemos, A.Lourenço, J. P.2012-03-132012-03-132010ARKIVOC, v, 170-182, 2010.AUT: ALE01411; JLO01215;http://hdl.handle.net/10400.1/939Mg:Al 3:1 hydrotalcite (Ht), used in catalytic quantities, promotes the generation of nitrosoalkenes, azoalkenes and nitrile oxides. These can be intercepted in situ by heterocycles and olefins in [4+2] and [3+2] cycloaddition reactions, producing dihydro-1,2-oxazines, tetrahydropyridazines and isoxazolines. The regeneration and reuse of Ht without loss of activity and the absence of organic solvent are the main advantages of this methodology.engCycloadditionHydrotalcitejournal article2012-03-12