Metallkomplexe mit biologisch wichtigen Liganden, XCVIII Cyclopalladierte Schiff-Basen von α-Aminosäure- und Peptidestern/Metal Complexes of Biologically Important Ligands, XCVIII Cyclopalladated Schiff Bases of α-Amino Acid and Peptide Esters
We describe a fully stereodivergentsynthesis of a range of α,α-disubstituted α-amino acids via an Ir/Cu-catalyzed α-allylation of readily available imine esters. The introduction of a Cu-Phox complex-activated imine ester into the chiral iridium-catalyzed allylic allylation process is crucial for its high reactivity and excellent enantio- and diastereoselectivity (up to >99% ee and >20:1 dr). Importantly
Copper/Ruthenium Relay Catalysis for Stereodivergent Access to δ‐Hydroxy α‐Amino Acids and Small Peptides
作者:Cong Fu、Ling He、Xin Chang、Xiang Cheng、Zuo‐Fei Wang、Zongpeng Zhang、Vladimir A. Larionov、Xiu‐Qin Dong、Chun‐Jiang Wang
DOI:10.1002/anie.202315325
日期:2024.2.12
An atom- and step-economical and redox-neutral cascadereaction enabled by dual-metal relay catalysis by merging borrowing-hydrogen and Michael addition reactions provided access to all stereoisomers of 2-amino-5-hydroxyvaleric acidderivatives with 1,4-non-adjacent stereocenters. Concise stereodivergent synthesis of key intermediates for the synthesis of biologically important chiral molecules further