Montmorillonite K-10 promoted synthesis of chiral dioxa-caged compounds derived from levoglucosenone
作者:Mariano A. Zurita、Aylén Avila、Rolando A. Spanevello、Alejandra G. Suárez、Ariel M. Sarotti
DOI:10.1016/j.carres.2014.07.019
日期:2015.1
A short and efficient methodology for the synthesis of chiral dioxa-caged compoundsfrom levoglucosenone, a biomass-derived enone, is herein presented. The key transformation, that involves a cascade 3-step cationic cyclization, was efficiently carried out in high yields and selectivities by Montmorillonite K-10 catalysis. The usefulness of K-10 in related semi-pinacol rearrangements to obtain pyran-3-ones