SYNTHESES OF BICYCLIC 1,2-DIOLS VIA THE RING-EXPANSION OF BRIDGEHEAD ALDEHYDES OF BICYCLOOCTANE AND BICYCLONONANES WITH BENZOYL TRIFLATE
Bridgehead aldehydes of bicyclooctane (11a), bicyclononane (12a), and bicyclononane (13a) have been subjected to acylative ring-expansion by using benzoyl trifluoromethanesulfonate (triflate) to give mixtures of two or three bicyclic