“…Trans-1,4,4,4-tetraphenylbut-2-en-1-one 35 undergoes a Type B aryl migration enone photorearrangement to give trans-1-benzoyl-2,2,3-triphenylcyclopropane 36, as well as trans-cis isomerization (Scheme 14). 23 p-Substituted 5-aryl-5-phenylcyclohexenones 37 underwent Type C enone rearrangements to give a 1 : 1 ratio of diastereomeric bicyclic ketones 38 and 39 (Scheme 15). 24 Irradiation of 2-(p-tolyloxy)indoles 40 gave rearranged and reduction products rather than electrocyclization products (Scheme 16).…”