%0 Journal Article %T Ring expansions using Baeyer-Villager oxidation: An efficient strategy for the construction of substituted AB-ring systems %A Bello Y. Makama %J Organic Communications %D 2010 %I ACG Publications %X An approach to the synthesis of regioselective cis fused substituted AB-ring systems is described. The key step involves a thermal cycloaddition to substituted cyclobutanones. The resulting cyclobutanones were subjected to regioselective Baeyer-Villager oxidation protocol %K Bicyclic lactones %K thermal %K cyclcoaddition %K cyclobutanone %K Baeyer-Villager oxidation . %U http://www.acgpubs.org/OC/2010/Volume%203/Issue%201/11_OC-1006-145.pdf