Helvetica Chimica Acta

Photochemische Reaktionen. 110. Mitteilung [1]. Zur Photochemie γ, δ??Methano?螃窿?enone

K Ishii, HR Wolf, O Jeger

Index: Ishii, Keitaro; Wolf, Hans Richerd; Jeger, Oskar Helvetica Chimica Acta, 1980 , vol. 63, # 6 p. 1520 - 1537

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Abstract

Summary Direct excitation (A= 254 or 3 347 nm) converts the y, 8-methano-a-enone (E)-10 into the isomeric ether 23 and the isomeric diene-ketone 24. Furthermore, on'TI, TI*- excitation (A= 254 nm)(E)-10 undergoes an 1, 3-homosigmatropic rearrangement yielding the enone (E)-25. In addition (E+ Z)-isomerization of (E)-10 and conversion of 10 to the isomeric furan 28 is observed. The isomerization (E)-10--f 23, 24 and (E)-25 proceeds by ...