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Paper | Regular issue | Vol 55, No. 1, 2001, pp.171-180
Published online, 1st January, 1970
DOI: 10.3987/COM-00-9090
An Unusual Cascade Reaction Yielding ortho-peri-Fused Thienopyridopyrimidines

Ulrich Sensfuss and Wolf-Dieter Habicher*

*Institut für Organische Chemie, Technische Universität Dresden. Mommsenstr. 13, D-01062 Dresden, Germany


A cascade-like ring transformation of a thieno[2,3-d]pyridine derivative is reported and mechanistically explained. The product is a novel heterocyclic system consisting of a thiophene ring peri-fused with a pyrido[2,3-d]pyrimidine moiety. Various derivatives of the new ring system were prepared.