β-Keto Esters Derived from 2-(Trimethylsilyl)ethanol: An Orthogonal Protective Group for β-Keto Esters
作者:Reinhard Brückner、Eva Knobloch
DOI:10.1055/s-2008-1067157
日期:2008.7
esters derived from 2-(trimethylsilyl)ethanol undergo cleavage and decarboxylation when treated with 0.75 equivalents of tetrabutylammoniumfluoride trihydrate in tetrahydrofuran at 50 °C, while P-keto esters derived from methanol, tert-butylalcohol, allyl alcohol, or benzyl alcohol stay intact. Conversely, methyl-, tert-butyl-, allyl-, or benzyl P-keto esters can be cleaved and decarboxylated without