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The epimeric 7-phenyl-7-chloro-2-oxabicyclo [4.1.0] heptanes

✍ Scribed by David B. Ledlie; William H. Hearne

Publisher
Elsevier Science
Year
1969
Tongue
French
Weight
177 KB
Volume
10
Category
Article
ISSN
0040-4039

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## Abstract 2‐Alkynylcyclohex‐2‐enones 1a–c and 2a–c react with H~2~O~2~/NaOH in MeOH to afford 1‐alkynyl‐7‐oxabicyclo[4.1.0]heptan‐2‐ones 3a–c and 4a–c, respectively. The 3‐unsubstituted bicyclic epoxy ketones 3a, 3b, and 4a, 4b react further with H~2~O~2~/NaOH, undergoing ring contraction and (fo