Convergent Access to Bis-spiroacetals through a Sila-Stetter–Ketalization Cascade
作者:Jessica Labarre-Lainé、Redouane Beniazza、Valérie Desvergnes、Yannick Landais
DOI:10.1021/ol402017x
日期:2013.9.20
An NHC-catalyzed sila-Stetter reaction between aliphatic acylsilanes and vinylketones bearing silyl ether substituents affords functionalized 1,4-diketones, which upon treatment under acidic conditions leads to the corresponding bis-spiroacetals. The two-step sequence may also be carried out in a one-pot operation leading to high yields of the desired bis-spiroacetals.