Enantioselective synthesis of (−)-chloramphenicol via silver-catalysed asymmetric isocyanoacetate aldol reaction

Abstract

The highly enantio- and diastereoselective aldol reaction of isocyanoacetates catalysed by Ag₂O and cinchona-derived amino phosphines applied to the synthesis of (−)- and (+)-chloramphenicol is described. The concise synthesis showcases the utility of this catalytic asymmetric methodology for the preparation of bioactive compounds possessing α-amino-β-hydroxy motifs.