Solid-phase synthesis of 3-aryl-3-oxo-propan amides by reaction of lithium enolates with 4-nitrophenyl carbamate resin or polymer-bound isocyanate
作者:Alexander G. Groß、Holger Deppe、Andreas Schober
DOI:10.1016/s0040-4039(03)00757-3
日期:2003.5
efficient solid-phase synthesis of 3-aryl-3-oxo-propan amides (β-keto amides) are described and compared. Lithium enolates, which can be obtained by deprotonation of methyl ketones with LiHMDS, are added to either an immobilized isocyanate or activated carbamate. After cleavage of the products from the solid support, various 3-aryl-3-oxo-propan amides are released in high yield and purity. The advantage