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Urea Synthesis from Isocyanides and O-Benzoyl Hydroxylamines Catalyzed by a Copper Salt.


ABSTRACT: In the presence of CuOAc, a series of unsymmetric ureas can be generated in moderate to good yields under mild reaction conditions (10 mol% of CuOAc, 2 equiv t-BuONa or PhONa, 30 °C), using aryl isocyanides and O-benzoyl hydroxylamines as the readily accessible starting materials. The reactions might undergo a cascade process involving isocyanide insertion into the N-O bond and Mumm-type rearrangement. This work represents a rare example of isocyanide insertion into N-O bonds, which would extend isocyanide insertion chemistry.

SUBMITTER: Yu N 

PROVIDER: S-EPMC9740992 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature

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Urea Synthesis from Isocyanides and <i>O</i>-Benzoyl Hydroxylamines Catalyzed by a Copper Salt.

Yu Ning N   Lv Jing-Fang JF   He Shi-Mei SM   Cui Yanyan Y   Wei Ye Y   Jiang Kun K  

Molecules (Basel, Switzerland) 20221125 23


In the presence of CuOAc, a series of unsymmetric ureas can be generated in moderate to good yields under mild reaction conditions (10 mol% of CuOAc, 2 equiv <i>t</i>-BuONa or PhONa, 30 °C), using aryl isocyanides and <i>O</i>-benzoyl hydroxylamines as the readily accessible starting materials. The reactions might undergo a cascade process involving isocyanide insertion into the N-O bond and Mumm-type rearrangement. This work represents a rare example of isocyanide insertion into N-O bonds, whic  ...[more]

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