Palladium(II)-Catalyzed Highly Stereoselective Sandwich-Type Triple Cyclization Reaction of 1,5-Bisallenes and 2,3-Allenoic Acids
作者:Xiongdong Lian、Shengming Ma
DOI:10.1002/chem.201000992
日期:2010.7.19
Triple‐decker sandwich: A sandwich‐type triplecyclization of two molecules of 2,3‐allenoic acid and one molecule of 1,5‐bisallene in the presence of a palladium catalyst with excellent stereoselectivity has been developed. The diallyl‐substituted cis products may easily be transformed to fused tetracyclic compounds with a 12‐membered ring (see scheme). Based on the result of optically active 2,3‐allenoic