Cycloaddition reactions of 2-vinylthiophen |
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| Authors: | Belen Abarca Rafael Ballesteros Emilio Enriquez Gurnos Jones |
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| Affiliation: | 1. Departamento de Quimica Organica, Facultad de Farmacia, Universidad de Valencia, ValenciaSpain;2. Department of Chemistry, University of Kee1e Keele, Staffordshire ST5 5BG England |
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| Abstract: | Cycloaddition reactions between 2-vinylthiophen and the dienophiles maleic anhydride, dimethyl acetylenedicarboxylate,' methyl propiolate, and methyl acrylate, are reported. Products include simple benzo[b]thiophen carboxylates (6, 13, 17) and reduced derivatives (3, 4, 18). The acetylenic dienophiles also gave a dihydrobenzthienyl-acrylate (16) or -fumarate (11), and the dithienylcyclohexene esters (7) and (14). |
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