A THREE-COMPONENT SYNTHESIS OF TRIFLUOROMETHYLATED HEXAHYDROPYRROLO[1,2-<i>a</i>]IMIDAZOL-5-ONES AND HEXAHYDROPYRROLO[1,2-<i>a</i>]PYRIMIDIN-6-ONES
DOI:
https://doi.org/10.1007/6850Keywords:
diamines, dipyrrolo[1, 2-a, 2', 1'-b]imidazole-3, 8-dione, 1'-b]pyrimidine-3, 9-dione, ethyl trifluoropyruvate, hexahydropyrrolo[ 1, 2-a]imidazol-5-ones, hexahydropyrrolo[1, 2-a]pyrimidin-6-ones, methyl ketones, analgesic activity, three-component reactionAbstract
A three-component reaction of ethyl trifluoropyruvate, methyl ketones, and ethylenediamine or 1,3-diaminopropane afforded hexahydropyrrolo[1,2-a]imidazol-5-ones and hexahydropyrrolo[1,2-a]pyrimidin-6-ones. When using an excess of ethyl trifluoropyruvate in reactions with acetone and diamines, dipyrrolo[1,2-a:2',1'-b]imidazole-3,8-dione and dipyrrolo[1,2-a:2',1'-b]pyrimidine-3,9-dione were obtained. An aldol mechanism for the formation of the bi- and tricyclic compounds was proposed, and their diastereomeric structure was established. Some of the obtained heterocycles were found to possess analgesic activity.
Authors: Marina V. Goryaeva, Olesya А. Fefelova, Yanina V. Burgart, Marina А. Ezhikova, Mikhail I. Kodess, Pavel А. Slepukhin, Galina А. Triandafilova,
Sergey Yu. Solodnikov, Olga P. Krasnykh, Victor I. Saloutin*