An exceptional palladium-catalyzed alkenylation of silyl enol ether in the absence of a fluoride additive

An exceptional intramolecular palladium-catalyzed alkenylation of silyl enol ether in the absence of a fluoride additive was developed, and this reaction led to the construction of bicyclo[3.3.1]nonane ring system in reasonable yield. In this type of reactions, trialkylamines were employed as additives instead of previously indispensable fluoride additives. (C) 2008 Elsevier Ltd. All rights reserved.