has been developed using ruthenium on carbon catalyst, hydrogengas at atmospheric pressure, and deuterium oxide as a source of deuterium. The process was successfully scaled-up, avoiding the use of expensive and sensitive catalyst and avoiding the use of deuteriumgas under pressure. High deuterium incorporation and high yield of labeled compounds were obtained by a simple filtration process.
Synthesis of Enantioenriched α-Deuterated α-Amino Acids Enabled by an Organophotocatalytic Radical Approach
作者:Peng Ji、Yueteng Zhang、Yue Dong、He Huang、Yongyi Wei、Wei Wang
DOI:10.1021/acs.orglett.0c00154
日期:2020.2.21
preparation of diverse, enantioenriched α-deuterated α-amino acids. Distinct from the well-established two-electron transformations, this radical-based strategy offers the unrivaled capacity of the convergent unification of readily accessible feedstock carboxylic acids and a chiral methyleneoxazolidinone fragment and the simultaneous highly diastereo-, chemo-, and regioselective incorporation of deuterium
A convenient method of preparation of α-deuterated L-amino acids via stereospecific isotope exchange in D2O catalyzed by lyophilized B/It7-A cells abundant in tryptophanase is reported
Enantioselective synthesis of α-deuterium labelled chiral α-amino acids via dynamic kinetic resolution of racemic azlactones
作者:Joong-Suk Oh、Kyung Il Kim、Choong Eui Song
DOI:10.1039/c1ob06319g
日期:——
Catalytic dynamickineticresolution (DKR) of racemic azlactones with EtOD using squaramide-based dimeric cinchona alkaloid organocatalysts is shown to be a highly effective strategy for the preparation of enantiomerically pure α-deuterated chiral α-amino acids.