Ester enolate Claisen rearrangement using a polymer-supported silyl triflate
作者:Yonghan Hu、John A. Porco
DOI:10.1016/s0040-4039(99)00441-4
日期:1999.4
silyl triflate. The silyl triflate reacted with enolizable esters in the presence of Et3N to afford resin-bound silyl ketene acetals, which undergo Ireland-Claisen rearrangement at elevated temperature to provide polymer silyl esters. Transesterification of the polymeric silyl esters with 5% H2SO4 in 1:1Me/OHClCH2CH2Cl(DCE) afforded methyl ester products.Figure options