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Paper | Regular issue | Vol 26, No. 10, 1987, pp.2615-2622
Published online, 1st January, 1970
DOI: 10.3987/R-1987-10-2615
Nitrogen Bridgehead Compounds. Part 67. Preparation of Novel Policyclic Quaternary Salts

István Bitter, Béle Pete, Béle Ágai, László Töke, Gábor Tóth, István Hermecz, Kálmán Simon, Zoltán Mészáros, and László Párkányi

*Department of Organic Chemical Technology, Technical University of Budapest, H-1521 Budapest, Gellért tér 4, Hungary


The first representatives of new polycyclic ring systems - thiazolo- end oxazolo-[2,3-b] triazaphenalenes, benzoxazolo-and benzothiazolo-[2,3-b] triazaphenalenes and isoquinolo-[1,2-b]triazazaphenalenes - are prepared by the cycloaddition of pyrido[1,2-a]pyrimidine derivatives with cyclic azomethines.