Construction of functionalised medium rings by stereospecific expansions of 2,3-epoxy alcohols under mild conditions.
6637 - 6640.
Ketones are converted with very high stereocontrol into functionalised medium rings incorporating a P-hydroxy ketone assembly via a ring-expansion mediated by tin(IV) chloride at low temperatures; either the threo or the erythro aldol products can be obtained. An asymmetric epoxidation permitted a subsequent highly enantiocontrolled semi-pinacol rearrangement. (C) 2002 Elsevier Science Ltd. All rights reserved.
|Title:||Construction of functionalised medium rings by stereospecific expansions of 2,3-epoxy alcohols under mild conditions|
|Keywords:||STEREOSELECTIVE CONSTRUCTION, QUATERNARY CARBON, REARRANGEMENT, MIGRATION, EPOXIDES, CENTERS|
|UCL classification:||UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Maths and Physical Sciences
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