Journal
TETRAHEDRON LETTERS
Volume 134, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2023.154835
Keywords
Pyrrolidine-based ligands; Transition metal complexes; ( L )-Proline; Strecker reaction; Enantioselective epoxidation of alkenes and; Henry reaction
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Chiral transition metal complexes with privileged ligands are efficient catalysts for various asymmetric organic transformations. Transition metal complexes of C1-symmetric pyrrolidine-based ligands have been widely used in asymmetric organic reactions. However, a comprehensive review article on the transition metal complexes of chiral C1-symmetric pyrrolidine-based ligands derived from (L)-proline has not been published.
Various asymmetric organic transformations were effectively catalyzed by the chiral transition metal complexes of the privileged ligands. A wide range of transition metal complexes of C1-symmetric pyrrolidine-based ligands are used in many asymmetric organic reactions over the past decades. Pyrrolidine-based ligands are among the easiest to synthesize, and their structures can be easily adjusted sterically and electronically. Transition metal complexes of chiral C1-symmetric pyrrolidine-based ligands derived from (L)-proline (chiral source) are not comprehensively published in the form of a review article. In this digest review, we wish to discuss the use of transition metal complexes of the pyrrolidine-based ligands synthesized from (L)-proline in the asymmetric Strecker reaction, epoxidation of alkenes, asymmetric Henry reaction, sulfoxidation, C-H hydroxylation, oxidation of spirocyclic hydrocarbons, transfer hydrogenation of ketone/hydrazones
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