Chemoselective Synthesis of<i>N</i>-Substituted α-Amino-α′-chloro Ketones<i>via</i>Chloromethylation of Glycine-Derived Weinreb Amides
作者:Vittorio Pace、Wolfgang Holzer、Guido Verniest、Andrés R. Alcántara、Norbert De Kimpe
DOI:10.1002/adsc.201201043
日期:2013.3.25
Functionalized α‐arylamino‐α′‐chloro ketones are obtained in high yield via a straightforward homologation reaction of Weinrebamides derived from N‐arylglycines using in situ generated chloromethyllithium. The use of the Weinrebamides is essential and allows the chemoselective homologation of N‐aryl‐N‐substituted glycine analogues, a transformation which is not possible using similar glycine esters. The