Abstract
| - Appropriately substituted 1-alkenyl-4-pentyn-1-ol systems,readily prepared from simple starting materials, serve asuseful precursors to a number of substituted cyclohept-4-enone derivatives via a microwave-assisted tandem oxyanionic 5-exo cyclization/Claisen rearrangement sequence.The reactions involving terminally substituted 4-pentyn-1-ols were found to be highly stereoselective, with the α andβ groups in the final product showing a strong preferencefor the trans orientation.
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