A. Srikrishna et S. Danieldoss, CHIRAL SYNTHONS FROM CARVONE .24. PHOTOCHEMICAL REARRANGEMENTS OF CHIRAL BICYCLO[2.2.2]OCT-5-EN-2-ONES, Synthetic communications, 27(4), 1997, pp. 655-661
Photochemical oxadi-pi-methane rearrangement (1,2-acyl shift) of the c
hiral bicyclo[2.2.2]oct-5-en-2-ones 2 and 3 furnishes the tricyclic ke
tones 5 and 6, whereas the 1,3-acyl shift generates the cyclobutanones
7 and 8 respectively.