Highly-functionalised difluorinated (hydroxymethyl)conduritol analogues via the Diels-Alder reactions of a difluorinated dienophile

Arany, Andrea and Crowley, Patrick J and Fawcett, John and Hursthouse, Michael B. and Kariuki, Benson M and Light, Mark E. and Moralee, Andrew C and Percy, Jonathan and Salafia, Vittoria (2004) Highly-functionalised difluorinated (hydroxymethyl)conduritol analogues via the Diels-Alder reactions of a difluorinated dienophile. Organic and Biomolecular Chemistry, 2 (4). pp. 455-465. ISSN 1477-0520

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Abstract

A difluorodienophile, synthesised using a Stille coupling reaction underwent tin(IV)-catalysed cycloaddition with three furans to afford oxa[2.2.1]bicycloheptenes in good yield. Reduction of ester and carbamate carbonyl groups and diol protection as the acetonide set the stage for palladium-catalysed hydrostannylation in two cases. Treatment of the stannanes with methyllithium triggered ring-opening to afford highly-functionalised difluorinated cyclohexenols which could be deprotected to afford (hydroxymethyl)conduritol analogues.

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