Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/22141
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dc.contributor.authorKumar, Sukeerthi-
dc.contributor.authorMashraqui, Sabir H-
dc.date.accessioned2013-10-17T08:27:29Z-
dc.date.available2013-10-17T08:27:29Z-
dc.date.issued2001-01-
dc.identifier.issn0975-0983(Online); 0376-4699(Print)-
dc.identifier.urihttp://hdl.handle.net/123456789/22141-
dc.description5-10en_US
dc.description.abstractReadily available vanillin 1 and isovanillin 2 have been exploited for the first time to synthesise thia and aza-bridged macrocycles. Utilising a common approach, 1 and 2 are first converted into the corresponding key intermediates, dicholoro compounds 5 and 10. Cyclocondensations of these molecules with Na2S under high di lution provide thia-bridged macrocycles 6 and 11 and with p-toluenesulphonamide under basic condition, the aza- bridged macrocycles 7 and 12, respectively are obtained. The structures are fully supported by elemental analysis, mass and high resolution NMR data. Variable NMR measurements on 6 and 11 suggest that these macrocycles are conformationally mobile even at -55°C on the NMR time scale.en_US
dc.language.isoen_USen_US
dc.publisherNISCAIR-CSIR, Indiaen_US
dc.rights CC Attribution-Noncommercial-No Derivative Works 2.5 Indiaen_US
dc.sourceIJC-B Vol.40B(01) [January 2001]en_US
dc.titleSynthesis of macrocycles derived from vanillin and isovanillinen_US
dc.typeArticleen_US
Appears in Collections:IJC-B Vol.40B(01) [January 2001]

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