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Photochemical Rearrangements of 5,6-Epimino-5,6-dihydro-β-ionone and Derivatives

✍ Scribed by Ernst Peter Müller

Publisher
John Wiley and Sons
Year
1986
Tongue
German
Weight
365 KB
Volume
69
Category
Article
ISSN
0018-019X

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✦ Synopsis

On irradiation at -20", 5,6-epimino-5,6-dihydro-p-ionone (E)-3 rearranges to the products 6 and 7. The N-methyl derivative (E)-4 does not lead to any photoproduct upon brief irradiation; on prolonged irradiation, only unspecific photodecomposition is observed. The N-acylated derivative (E)-5 undergoes rapid (E)/(Z)-isomerization and slow rearrangement to 12 and 13. ') In ionone derivatives, numbering according to the carotenoid nomenclature is used [I]

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