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Iron‐Catalyzed Intramolecular C—H Amidation of N‐Benzoyloxyureas

Iron‐Catalyzed Intramolecular C—H Amidation of N‐Benzoyloxyureas A redox‐neutral Fe‐catalyzed intramolecular C—H amidation of N‐benzoyloxyureas is described. This methodology employs a simple iron complex in situ generated from Fe(OTf)2 and bipyridine as the catalyst and N‐benzoyloxyureas as the nitrene precursors without using exogenous oxidants. An array of cyclic ureas were synthesized via aliphatic C(sp3)—H amidation in excellent yields. In addition, this catalytic system is also amenable to aryl C(sp2)—H nitrene insertion to provide benzimidazolones in moderate yields. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Chinese Journal of Chemistry Wiley

Iron‐Catalyzed Intramolecular C—H Amidation of N‐Benzoyloxyureas

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References (41)

Publisher
Wiley
Copyright
© 2021 SIOC, CAS, Shanghai, & WILEY‐VCH GmbH
ISSN
1001-604X
eISSN
1614-7065
DOI
10.1002/cjoc.202100005
Publisher site
See Article on Publisher Site

Abstract

A redox‐neutral Fe‐catalyzed intramolecular C—H amidation of N‐benzoyloxyureas is described. This methodology employs a simple iron complex in situ generated from Fe(OTf)2 and bipyridine as the catalyst and N‐benzoyloxyureas as the nitrene precursors without using exogenous oxidants. An array of cyclic ureas were synthesized via aliphatic C(sp3)—H amidation in excellent yields. In addition, this catalytic system is also amenable to aryl C(sp2)—H nitrene insertion to provide benzimidazolones in moderate yields.

Journal

Chinese Journal of ChemistryWiley

Published: Apr 1, 2021

Keywords: ; ; ; ;

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