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Title: | Cycloaddition reactions of 3-aryl-5-phenyl-5H,7H-thiazolo[3,4-c]oxazol-4-ium-1-olates | Authors: | Melo, Teresa M. V. D. Pinho e Gomes, Clara S. B. Gonsalves, António M. d'A. Rocha Paixão, José A. Beja, Ana M. Silva, Manuela Ramos Veiga, Luiz Alte da |
Keywords: | dipolar cycloaddition; münchnones; 1H,3H-pyrrolo[1,2-c]thiazoles | Issue Date: | 2002 | Citation: | Tetrahedron. 58:25 (2002) 5093-5102 | Abstract: | Intermolecular 1,3-dipolar cycloaddition of (5R)- and (5S)-3,5-diphenyl-5H,7H-thiazolo[3,4-c]oxazol-4-ium-1-olates, (5R)- and (5S)-3-(p-methoxyphenyl)-5-phenyl-5H,7H-thiazolo-[3,4-c]oxazol-4-ium-1-olates with a range of dipolarophiles is described. New chiral 5-aryl-3-phenyl-1H,3H-pyrrolo[1,2-c]thiazoles with R and S configuration were obtained. The structure of methyl (3R)-3-phenyl-5-(p-methoxyphenyl)-1H,3H-pyrrolo[1,2-c]thiazole-6-carboxylate was determined by X-ray crystallography. The synthesis of 7,7a-dihydro-1H,3H-pyrrolo[1,2-c]thiazole-6,7-dicarboxylates was also achieved. | URI: | https://hdl.handle.net/10316/5185 | DOI: | 10.1016/S0040-4020(02)00463-5 | Rights: | openAccess |
Appears in Collections: | FCTUC Química - Artigos em Revistas Internacionais |
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