Abstract:Reactions of 2-ethoxyprop-2-enal with cycloaliphatic secondary amines (morpholine, piperidine, pyrrolidine) follow 1,4-or 1,2-addition pattern with subsequent condensation of the adduct with the initial amine to produce isomeric 2-ethoxyprop-2-ene-1,1-diamines and 2-ethoxyprop-1-ene-1,3-diamines. These reactions are accelerated by a factor of 15-30 under microwave irradiation and in the presence of water. The regioselectivity of primary nucleophilic attack varies over a wide range, depending on the amine basic… Show more
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