Author/Authors :
Teresa M.V.D. Pinho e Melo، نويسنده , , Maria I.L. Soares، نويسنده , , D?lia M. Barbosa، نويسنده , , Ant?nio M.dʹA. Rocha Gonsalves، نويسنده , , Ana Matos Beja، نويسنده , , José A. Paix?o، نويسنده , , Manuela Ramos Silva، نويسنده , , Luiz Alte da Veiga، نويسنده ,
Abstract :
(5R)-3-Methyl-5-phenyl-5H,7H-thiazolo[3,4-c]oxazol-4-ium-1-olate was generated in the presence of a range of dipolarophiles. The intermolecular 1,3-dipolar cycloaddition of this mesoionic species led to the synthesis of chiral 1H-pyrrolo[1,2-c]thiazole derivatives 7a, 7b, 8, 14, 18, 19 and 20. In the reaction with methyl and ethyl vinyl ketone, spiro compounds 9 and 15 were also obtained. The structure of compound 15 was determined by X-ray crystallography.
