Photochemische Reaktionen 94. Mitteilung. Vinyloge β??Spaltung bei Epoxy??enonen der Jonon??Reihe

B Frei, H Eichenberger, B Von Wartburg…

Index: Frei,B. et al. Helvetica Chimica Acta, 1977 , vol. 60, p. 2968 - 3006

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Citation Number: 30

Abstract

Summary The photochemistry of the a,/?-unsaturated y, 6-epoxy-enones 1-3 is determined by:(i) C (y)-0-scission of the epoxide (vinylogous/?-cleavage of Type A);(ii) C (y)-C (G)- cleavage of the oxirane (vinylogous P-cleavage of Type B);(iii)(E/Z)-isomerization of the enone chromophore. In contrast, 4 with tertiary C (6) shows no Type B cleavage.