Fluorenylmethoxycarbonyl-<i>N</i>-methylamino Acids Synthesized in a Flow Tube-in-Tube Reactor with a Liquid-Liquid Semipermeable Membrane
作者:Annette E. Buba、Stefan Koch、Horst Kunz、Holger Löwe
DOI:10.1002/ejoc.201300705
日期:2013.7
bonyl (Fmoc) amino acids were carried out in a microstructured tube-in-tubereactor equipped with a semipermeable Teflon® AF 2400 membrane as the inner tubing. In the first step, gaseous formaldehyde was passed through the inner membrane to effect the acid-catalyzed conversion of the Fmoc amino acids into the corresponding N-Fmoc oxazolidinones. In the second step, liquid–liquid transfer of trifluoroacetic