Acid-Catalyzed Cyclization of Terpenes Under Homogeneous and Heterogeneous Conditions as Probed Through Stereoisotopic Studies: A Concerted Process with Competing Preorganized Chair and Boat Transition States
作者:Christos Raptis、Ioannis N. Lykakis、Constantinos Tsangarakis、Manolis Stratakis
DOI:10.1002/chem.200901563
日期:2009.11.9
concerted dicyclization occurs with a preorganized boat–chair transition state competing with the chair–chair transition state. Under zeolite confinement conditions, the chair–chairlike dicyclization transition state is highly favorable. The preference of chairlike transitionstates within the cavities of zeolite Y is attributed to a transition state shape selectivity effect.