A new method for the synthesis of N-protected β-amino-α-keto esters from fluoroalkanesulfonylazides and α-keto esters
作者:Shizheng Zhu、Guifang Jin、Yong Xu
DOI:10.1016/s0040-4020(03)00622-7
日期:2003.6
In the presence of a secondary amine, treatment of α-keto esters with fluoroalkanesulfonyl azides at room temperature afforded N-sulfonyl protected β-amino-α-keto esters in good to excellent yields. This reaction provided a novel, direct and convenient access to N-sulfonyl protected β-amino-α-keto esters from α-keto esters and fluoroalkanesulfonyl azides under mild conditions. However, the reaction