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Photochemical 1,3-Migration of the Hydroxyl Group in 1-Alkyl-3-hydroxyoxindoles

โœ Scribed by Jiro Tatsugi; Kenji Ikuma; Yasuji Izawa


Publisher
Elsevier Science
Year
1995
Tongue
French
Weight
129 KB
Volume
36
Category
Article
ISSN
0040-4039

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Irradiation of 1,3-dihydro-2lJ-azepin-2-ones in aprotic solvents gives azabicycloheptenones by intramolecular cycloaddition, but photochemical isomerization in methanol results in 1,3-acyl migration involving cleavage of the amide bond. Seven-membered heterocycles containing a conjugated diene syst