Journal
TETRAHEDRON LETTERS
Volume 49, Issue 34, Pages 5053-5055Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2008.06.038
Keywords
allenoate; Lewis acids; cascade; aldol; alkynylogous
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The treatment Of Propargylic esters tethered to bicyclo[3.2.0]heptanone, 2-methylindanone, 2-methyltetralone, or 2-methylsuberone led to fused tricyclic allenoates by an intramolecular alkynylogous Mukaiyama aldol type reaction promoted by TBSOTf/NEt(3), the key intermediates being silylalkynylketene acetals. (c) 2008 Elsevier Ltd. All rights reserved.
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