Unusual Anisotropic Effects from 1,3-Dipolar Cycloadducts of 4-Azidomethyl Coumarins

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dc.citation.epage97en_US
dc.citation.issue1en_US
dc.citation.spage91en_US
dc.citation.volume47en_US
dc.citation.woscount4
dc.contributor.authorKusanur, Raviraj A.en_US
dc.contributor.authorKulkarni, Manohar V.en_US
dc.contributor.authorKulkarni, Geetha M.en_US
dc.contributor.authorNayak, Susanta K.en_US
dc.contributor.authorRow, Tayur N. Guruen_US
dc.contributor.authorGanesan, Kiliveluen_US
dc.contributor.authorSun, Chung-Mingen_US
dc.contributor.department應用化學系zh_TW
dc.contributor.departmentDepartment of Applied Chemistryen_US
dc.date.accessioned2014-12-08T15:08:00Z
dc.date.available2014-12-08T15:08:00Z
dc.date.issued2010-01-01en_US
dc.description.abstract4-Bromomethylcoumarins (1) reacted with sodium azide in aqueous acetone to give 4-azidomethyl-coumarins (2), which underwent 1,3-dipolar cycloaddition with acetylenic dipolarophiles to give triazoles (3). These triazoles (3) have been found to exhibit interesting variations in the chemical shifts of C(3)-H and C(4)-methylene protons. Protonation studies indicate that the shielding effect of the C(3)-H of coumarin is due to pi-electrons of the triazole ring, further supported by diffraction and computational studies.en_US
dc.identifier.doi10.1002/jhet.273en_US
dc.identifier.issn0022-152Xen_US
dc.identifier.journalJOURNAL OF HETEROCYCLIC CHEMISTRYen_US
dc.identifier.urihttp://dx.doi.org/10.1002/jhet.273en_US
dc.identifier.urihttps://ir.lib.nycu.edu.tw/handle/11536/6282
dc.identifier.wosnumberWOS:000274490300016
dc.language.isoen_USen_US
dc.titleUnusual Anisotropic Effects from 1,3-Dipolar Cycloadducts of 4-Azidomethyl Coumarinsen_US
dc.typeArticleen_US

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