Cascade transformation of 4-hydroxymethyl-2-carene into novel cage methanopyrano[4,3-b]thieno[3,2-g]benzofuran derivative |
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| Institution: | 1. N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russian Federation;2. Institute of Chemistry of New Materials, National Academy of Sciences of Belarus, 220141 Minsk, Belarus |
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| Abstract: | Reaction of trans-4-hydroxymethyl-2-carene with thiophene- 2-carbaldehyde under heterogeneous catalysis by K10 clay affordsubstitutedmethanopyrano4,3-b]thieno3,2-g]- benzofuran, a complex 5-membered chiral cage heterocyclic compound containing two thiophene moieties. Its structure was determined by 1D and 2D NMR experiments (HSQC, HMBC, COSY, NOESY) and HRMS. |
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| Keywords: | terpenoids carene thiophene-2-carbaldehyde clays montmorillonite K10 halloysite heterogeneous catalysis |
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