Die Kondensation von γ-und δ-Oxo-carbonsäureester mit 1,2-, 1,3- und 1,4-Alkylendiaminen |
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Authors: | H. Wollweber,J. Kurz,W. N gele |
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Affiliation: | H. Wollweber,J. Kurz,W. Nägele |
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Abstract: | Condensation of Esters of γ- and δ-Oxocarboxylic Acids with Alkylene-1,2,1,3- and 1,4-diamines. Esters of γ-and δ-Oxocarboxylic acids condense with alkylene-1,2-, 1,3-, and 1,4-diamines and yield bicyclic lactams (5) . The path of the reaction was studied by spectroscopic methods using ethyl levulinate and N-methyl-propylene-1,2-diamine. The first step is the formation of an “aminalester” by reaction of the CO-group of ethyl levulinate with alkylene diamine, followed by intramolecular ring closure. |
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