Synlett 2026; 37(02): 269-274
DOI: 10.1055/a-2711-1520
Letter

Facile Preparation of Chiral 1,2-Amino Alcohols Containing Unsymmetrical N-α-Secondary Alkyl Substituents

Autor*innen

  • Houguang Shi

    1   School of Medicine, Shanghai University, Shanghai, China
  • Yanhong Song

    2   Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, Shanghai University, Shanghai, China
  • Hegui Gong

    2   Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, Shanghai University, Shanghai, China

Gefördert durch: National Natural Science Foundation of China 22271182

Funding Information The authors acknowledge the financial support of the National Natural Science Foundation of China (22271182).


Graphical Abstract

Abstract

To address the lack of general synthetic methods for accessing chiral 1,2-amino alcohols bearing unsymmetrical N-α-secondary-alkyl groups (CAUAs), we developed an efficient protocol based on diastereoselective addition of alkyl Grignard and MeLi reagents to (S)-3,3-dimethyl-1,7a-dihydro-3H,5H-pyrrolo [1,2-c]oxazol-5-one (2). Careful methanolysis of the resulting adducts provided diverse CAUAs featuring a terminal ester functionality. Notably, intermediate 11 served as a key precursor for the synthesis of BiOx ligand 12, which exhibited exceptional performance in catalyzing the Ni-catalyzed enantioselective coupling of α-iodoacetals with aryl bromides.



Publikationsverlauf

Eingereicht: 27. Juli 2025

Angenommen nach Revision: 26. September 2025

Accepted Manuscript online:
26. September 2025

Artikel online veröffentlicht:
07. November 2025

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