Abstract
A propargylic alcohol 24 with the propynyl group exo on the norbornene framework was used in a stereospecific synthesis of the mixture of allylsilanes 27 and 28. The stereospecific reaction of this mixture with peracid gave, with a high level of stereocontrol, the norbornenol 25 having the alkenyl group endo on the norbornene framework. This substrate underwent an oxyanion accelerated Cope rearrangement setting up all four stereocentres in a synthesis of (±)-dihydronepetalactone 6.
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More From: Journal of the Chemical Society, Perkin Transactions 1
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