Abstract
(Chemical Equatation Reprentation) Rapid construction: We report the first successful implementation of a catalytic tandem carbocyclization/annulation cascade reaction (e.g., see scheme) using acetal-allene or ketal-aliene substrates through a dealkoxylative mode. This gold catalysis enables a rapid stereocontrolled construction of oxacyclic or carbocyclic frameworks. © 2010 Wiley-VCH Verlag GmbH & Co. KGaA,.