Synthesis 2024; 56(09): 1476-1484
DOI: 10.1055/s-0043-1763675
paper

Synthesis of Amides and Peptides by Employing [4-(Acetylamino) phenyl]imidodisulfuryl Difluoride (AISF) as a Coupling Reagent

Swetha Bharamawadeyar
,
Eti Chetankumar
,
Chinthaginjala Srinivasulu
,
We sincerely acknowledge financial assistance from the Department of Science and Technology, Science and Engineering Research Board (SERB) in the form of a Core Research Grant (CRG) (CRG/2020/001058).


Abstract

A new synthetic approach for the preparation of amides and peptides containing amino acids as well as aryl acids and amines by employing [4-(acetylamino)phenyl]imidodisulfuryl difluoride (AISF) as a carboxylic acid activator under mild conditions is delineated. The use of AISF as an acid activator allows the reaction to be performed efficiently. This operationally simple amidation is amenable to a wide variety of carboxylic acids and Nα-protected amino acids. Further, racemization did not occur during the coupling. In addition, a gram-scale reaction is demonstrated.

Supporting Information



Publication History

Received: 16 November 2023

Accepted after revision: 27 December 2023

Article published online:
08 February 2024

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