Intramolecular [2+2] photocycloaddition of enone-acetals
作者:Michael C. Pirrung、Stephen A. Thomson
DOI:10.1016/s0040-4039(00)84621-3
日期:——
Lewis acid catalyzed condensation of unsaturated orthoformates with dienol ethers gives enone-acetals suitable for intramolecular photocyclo-additions, yielding heterocyclic precursors to sesquiterpene lactones.