Synthesis of N-alkylated amino acids using fluorous-tagged hydroxylamines
作者:Simon D. Nielsen、Garrick P. Smith、Mikael Begtrup、Jesper L. Kristensen
DOI:10.1016/j.tet.2011.05.039
日期:2011.7
a new fluorous-tagged ammonia-equivalent for the synthesis of N-alkylated aminoacids is described. The required building blocks were readily accessed in high yield and purity using F-SPE purification technique. Coupling of the fluorous-tagged hydroxylamines with a selection of boronic acids and glyoxalic acid gave the desired N-alkylated aminoacids. Subsequent removal of the fluorous tag via catalytic