Nitrogen-bridged heterocycles via cycloaddition of non-classical heterocyclic-fused-[c]thiazoles |
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| Authors: | Maria IL SoaresClara SB Gomes Teresa MVD Pinho e Melo |
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| Institution: | a Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
b Centro de Química Estrutural, Instituto Superior Técnico, Technical University of Lisbon, Av. Rovisco Pais, 1049-001 Lisboa, Portugal |
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| Abstract: | The 4π+2π] cycloaddition of non-classical heterocyclic-fused-c]thiazoles was explored allowing the synthesis of a range of new nitrogen-bridged bi-, tri- and tetracyclic heterocyclic compounds namely, pyrazolo1,5-a]pyridines, thiazolo2,3,4-cd]pyrrolizines and indolizines. For the first time, one non-classical pyrrolo1,2-c]thiazole was isolated and its structure determined by X-ray crystallography. |
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