2-Alkynylcyclopent-2-enols from 2-Alkyny
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Birgit Sander; Sven Andresen; Stefan Reichow; Katia Dubois; William C. Agosta; P
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Article
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1996
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John Wiley and Sons
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German
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## Abstract 2โAlkynylcyclohexโ2โenones 1aโc and 2aโc react with H~2~O~2~/NaOH in MeOH to afford 1โalkynylโ7โoxabicyclo[4.1.0]heptanโ2โones 3aโc and 4aโc, respectively. The 3โunsubstituted bicyclic epoxy ketones 3a, 3b, and 4a, 4b react further with H~2~O~2~/NaOH, undergoing ring contraction and (fo