Diastereoselective synthesis of 2,3-disubstituted tetrahydrofuran synthons via the iodoetherification reaction. A transition state model based rationalization of the allylic asymmetric induction
Diastereoselective synthesis of 2,3-disubstituted tetrahydrofuran synthons via the iodoetherification reaction. A transition state model based rationalization of the allylic asymmetric induction
(−)-lauthisan as well as formal synthesis of (+)-lauthisan have been accomplished. The key step involves an unusually regioselective CC bond forming cyclization of acyclic ether to give a 8-membered cyclic ether. The regioselectivecyclization is based on allylic substituent controlled intramolecular alkylation of allylic carbonate which is catalyzed by Pd(0).