Synthesis of unsaturated bicyclic lactones and acetals via palladium-promoted cyclization of cyclic allylic alcohols
作者:Richard C. Larock、Dean E. Stinn
DOI:10.1016/s0040-4039(00)99120-2
日期:1989.1
Unsaturated bicyclic lactones are readily prepared by converting cyclic allylic alcohols to the corresponding α-chloromercurio acetate esters and reacting them with Li2PdCl4. The corresponding acetals can be synthesized directly by reaction of the allylic alcohols with ethyl vinyl ether and Pd(OAc)2.
A direct synthesis of hydroxysemperoside deglucoside
作者:George A. Kraus、Jeff Thurston
DOI:10.1021/ja00208a012
日期:1989.12
A 1 0-step synthesis of hydroxysemperosidedeglucoside has been achieved. The key step is an organopalladium-mediated cyclization that produces a highly functionalized oxabicyclooctane. The remaining functional groups are introduced by addition to the exo face of the fused bicyclic system.