Synthesis of Spiroacetal Enol Ethers by Oxidative Activation of Furan Derivatives
作者:Jeremy Robertson、Sébastien Naud
DOI:10.1021/ol802138t
日期:2008.12.4
Activation of furan by electron transfer combines with the radical stabilizing effect of the alkynyl substituent (R = Ph, MeC[triple bond]C-) to achieve site-selectivecation formation. A tethered hydroxy group acts as a probe of this site-selectivity to produce the ring system present in spirocyclic natural products found in Artemisia and Chrysanthemum species. cis-Dihydroxylation proceeds with high