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Synthesis 2025; 57(20): 2893-2908
DOI: 10.1055/a-2646-8383
DOI: 10.1055/a-2646-8383
Short Review
N-Alkylation by Hydrogen Borrowing: Pharmaceutical Applications and Comparison with Other Methods
Autoren
We thank the National Science Foundation (CHE-1856395) for sponsorship.
Abstract
Formation of C–N bonds is a quintessential transformation in organic synthesis. Among the various methods to access them, hydrogen borrowing catalysis offers a green, atom-economical, and cost-effective approach, with water being the sole by-product. In this reaction, amines are alkylated using alcohol coupling partners in the presence of a transition metal catalyst. Several catalytic systems have been developed and utilized in the synthesis of pharmaceutical intermediates and complex natural products, thereby replacing conventional amination reactions with hydrogen borrowing reactions that deliver improved selectivity and yield. In this short review, we compare hydrogen borrowing N-alkylation with other classical and modern C–N bond forming reactions and discuss applications in pharmaceutical synthesis.
Keywords
N-alkylation - Hydrogen borrowing - Amine alkylation - C–N bond formation - Natural products - Pharmaceutical intermediates - CatalysisPublikationsverlauf
Eingereicht: 10. April 2025
Angenommen nach Revision: 01. Juli 2025
Accepted Manuscript online:
01. Juli 2025
Artikel online veröffentlicht:
07. August 2025
© 2025. Thieme. All rights reserved.
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