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- Publisher Website: 10.1039/P19750000666
- Scopus: eid_2-s2.0-37049121265
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Article: Isomerism in bicyclic diacetals. Part I. 1,3:2,4- and 1,4:2,3- Di-O-methylene- erythritol
Title | Isomerism in bicyclic diacetals. Part I. 1,3:2,4- and 1,4:2,3- Di-O-methylene- erythritol |
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Authors | |
Issue Date | 1975 |
Citation | Journal of the Chemical Society, Perkin Transactions 1, 1975, n. 7, p. 666-674 How to Cite? |
Abstract | Acid-catalysed methylenation of erythritol affords 1,3 2,4- and 1,4:2,3-di-O-methylene-erythritol and a small amount of 1,4-anhydro-2,3-O-methylene-erythritol. Constitutional assignments have been made to the diacetals on the basis of their 1H n.m.r. and mass spectra. Deuteriation studies and the Janthanide shift reagent, Eu(fod) |
Persistent Identifier | http://hdl.handle.net/10722/332816 |
ISSN | |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Burden, Ian J. | - |
dc.contributor.author | Stoddart, J. Fraser | - |
dc.date.accessioned | 2023-10-06T05:14:30Z | - |
dc.date.available | 2023-10-06T05:14:30Z | - |
dc.date.issued | 1975 | - |
dc.identifier.citation | Journal of the Chemical Society, Perkin Transactions 1, 1975, n. 7, p. 666-674 | - |
dc.identifier.issn | 1470-4358 | - |
dc.identifier.uri | http://hdl.handle.net/10722/332816 | - |
dc.description.abstract | Acid-catalysed methylenation of erythritol affords 1,3 2,4- and 1,4:2,3-di-O-methylene-erythritol and a small amount of 1,4-anhydro-2,3-O-methylene-erythritol. Constitutional assignments have been made to the diacetals on the basis of their <sup>1</sup>H n.m.r. and mass spectra. Deuteriation studies and the Janthanide shift reagent, Eu(fod)<inf>3</inf>, have been employed to investigate the conformational behaviour of the 1,4:2,3-diacetal in solution by <sup>1</sup>H n.m.r. spectroscopy. Acid-catalysed equilibration of the 1,3:2,4- and 1,4:2,3-diacetals indicates that there is a free energy difference of 1·37 kcal mol<sup>-1</sup> in favour of the former at room temperature. The significance of these results is discussed in terms of electronic effects associated with the -0-C-C-O-fragments as well as steric effects. © Royal Society of Chemistry. | - |
dc.language | eng | - |
dc.relation.ispartof | Journal of the Chemical Society, Perkin Transactions 1 | - |
dc.title | Isomerism in bicyclic diacetals. Part I. 1,3:2,4- and 1,4:2,3- Di-O-methylene- erythritol | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1039/P19750000666 | - |
dc.identifier.scopus | eid_2-s2.0-37049121265 | - |
dc.identifier.issue | 7 | - |
dc.identifier.spage | 666 | - |
dc.identifier.epage | 674 | - |
dc.identifier.isi | WOS:A1975AC41400015 | - |