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Photoisomerization of 6-methylbicyclo[4.1.0]heptan-2-ones

✍ Scribed by Wiliam G. Dauben; Wiliard M. Welch

Publisher
Elsevier Science
Year
1971
Tongue
French
Weight
134 KB
Volume
12
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