Synthesis of 1,2,5-oxathiazole-S-oxides by 1,3 dipolar cycloadditions of nitrile oxides to α-oxo sulfines

dc.contributor.authorMcCaw, Patrick G.
dc.contributor.authorKhandavilli, Udaya Bhaskara Rao
dc.contributor.authorLawrence, Simon E.
dc.contributor.authorMaguire, Anita R.
dc.contributor.authorCollins, Stuart G.
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderIrish Research Councilen
dc.date.accessioned2019-02-14T11:22:40Z
dc.date.available2019-02-14T11:22:40Z
dc.date.issued2018-12-12
dc.date.updated2019-02-14T10:20:26Z
dc.description.abstractSynthetic methodology for the generation of novel 1,2,5-oxathiazole-S-oxides from cycloaddition of nitrile oxide dipoles with α-oxo sulfines generated in situ via the α-sulfinyl carbenes derived from α-diazosulfoxides is described. Experimental evidence and mechanistic rationale for the unanticipated interconversion of the diastereomeric 1,2,5-oxathiazole-S-oxide cycloadducts are discussed. Notably, using rhodium acetate as a catalyst at 0 °C under traditional batch conditions led to the selective formation and isolation of the kinetic isomers, while, in contrast, using continuous flow thermolysis, optimal conditions for the synthesis and isolation of the thermodynamic isomers were established.en
dc.description.sponsorshipScience Foundation Ireland (05/PICA/B802/EC07)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationMcCaw, P. G., Khandavilli, U. B. R., Lawrence, S. E., Maguire, A. R. and Collins, S. G. (2018) 'Synthesis of 1,2,5-oxathiazole-S-oxides by 1,3 dipolar cycloadditions of nitrile oxides to α-oxo sulfines', Organic and Biomolecular Chemistry, 17(3), pp. 622-638. doi:10.1039/C8OB02691Ben
dc.identifier.doi10.1039/C8OB02691B
dc.identifier.endpage638en
dc.identifier.issn1477-0520
dc.identifier.issn1477-0539
dc.identifier.issued3en
dc.identifier.journaltitleOrganic and Biomolecular Chemistryen
dc.identifier.startpage622en
dc.identifier.urihttps://hdl.handle.net/10468/7494
dc.identifier.volume17en
dc.language.isoenen
dc.publisherRoyal Society of Chemistryen
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Research Centres/12/RC/2275/IE/Synthesis and Solid State Pharmaceutical Centre (SSPC)/en
dc.rights© 2018, the Authors. Published by the Royal Society of Chemistry. All rights reserved.en
dc.subjectRhodium acetateen
dc.subjectCatalysten
dc.subjectKinetic isomersen
dc.subjectContinuous flow thermolysisen
dc.subjectThermodynamic isomersen
dc.titleSynthesis of 1,2,5-oxathiazole-S-oxides by 1,3 dipolar cycloadditions of nitrile oxides to α-oxo sulfinesen
dc.typeArticle (peer-reviewed)en
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