Synthesis 2020; 52(07): 1060-1066
DOI: 10.1055/s-0039-1690055
paper
© Georg Thieme Verlag Stuttgart · New York

Thioesterification and Selenoesterification of Amides via Selective N–C Cleavage at Room Temperature: N–C(O) to S/Se–C(O) Interconversion

Md. Mahbubur Rahman
,
Guangchen Li
,
Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ 07102, USA   Email: michal.szostak@rutgers.edu
› Author Affiliations
Rutgers University and the National Science Foundation (NSF, CAREER CHE-1650766) are gratefully acknowledged for support.
Further Information

Publication History

Received: 31 December 2019

Accepted after revision: 26 January 2020

Publication Date:
25 February 2020 (online)


Abstract

The direct nucleophilic addition to amides represents an attractive methodology in organic synthesis that tackles amidic resonance by ground-state destabilization. This approach has been recently accomplished with carbon, nitrogen and oxygen nucleophiles. Herein, we report an exceedingly mild method for the direct thioesterification and selenoesterification of amides by selective N–C(O) bond cleavage in the absence of transition metals. Acyclic amides undergo N–C(O) to S/Se–C(O) interconversion to give the corresponding thioesters and selenoesters in excellent yields at room temperature via a tetrahedral intermediate pathway (cf. an acyl metal).

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