Enantioselective synthesis of β<sup>2</sup>-amino acids using rhodium-catalyzed hydrogenation
作者:Rob Hoen、Theodora Tiemersma-Wegman、Barbara Procuranti、Laurent Lefort、Johannes G. de Vries、Adriaan J. Minnaard、Ben L. Feringa
DOI:10.1039/b615131k
日期:——
protected beta2-dehydroamino acids has been prepared in three steps from commercially available starting materials in good yields. These were used as substrates in rhodium-catalyzedasymmetrichydrogenation applying a mixed ligand system of monodentate phosphoramidites and phosphines. Optimization of the catalyst structure was achieved by high throughput experimentation. High enantioselectivities were obtained