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Unusual case of selectivity in a photochemical reaction. Photoisomerization of unsymmetrical 1,3-dienes

✍ Scribed by Eastman, Leslie R.; Zarnegar, Bizhan M.; Butler, James M.; Whitten, David G.

Book ID
126075547
Publisher
American Chemical Society
Year
1974
Tongue
English
Weight
398 KB
Volume
96
Category
Article
ISSN
0002-7863

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## Abstract On singlet excitation (Ξ» = 254 nm), the epoxydiene (__E__)‐**3** underwent (__E__)/(__Z__)‐isomerization, electrocyclic ring closure of the diene side chain leading to the cyclobutenes **4A + B**, and rearrangement to the cyclohexanones **5A + B**. Compounds **5A + B** were presumably f