A. Srikrishna et al., CHIRAL SYNTHONS FROM CARVONE .22. SYNTHESIS OF CHIRAL BICYCLO[2.2.2]OCTA-5,7-DIEN-2-ONES, Synthetic communications, 27(4), 1997, pp. 601-608
Reaction of the methoxyenones 3 and 11 with an excess of boron trifluo
ride etherate furnishes cleanly the chiral bicyclo[2.2.2]octa-5,7-dien
-2-ones 9 and 12 respectively.