Synthesis of aza polycyclic compounds derived from pyrrolidine, indolizidine, and indole via intramolecular Diels-Alder cycloadditions of neutral 2-azadienes |
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| Authors: | Palacios Francisco Alonso Concepción Amezua Patricia Rubiales Gloria |
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| Institution: | Departamento de Química Orgánica I, Facultad de Farmacia, Universidad del País Vasco., Apartado 450, 01080 Vitoria, Spain. qoppagaf@ehu.vc.es |
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| Abstract: | A method for the preparation of novel oxaza and diaza polycyclic 9-oxa-4-azaphenanthrene, 5H-pyrido2,3-a]pyrrolizine, 5H,6H-pyrido3,2-g]indolizine, and 5H,6H-indeno2,1-a]indole is described, based on tandem reactions: aza-Wittig reaction of N-vinylic phosphazenes with functionalized aldehydes and an intramolecular aza-Diels-Alder reaction. |
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