A metal-controlled, regioselective intermolecular amination of unsaturated N-acylpyrazoles with azodicarboxylates is described. Under zinc catalysis, the N-acylpyrazole substrates undergo amination at the α-position of the N-acylpyrazole moiety. Conversely, with silver as the catalyst, the reaction gave γ-amination products. Both catalytic protocols provided alternative, convenient, and simple strategies for efficiently and regioselectively accessing structurally unique C-N-bond containing compounds. The synthetic utility of this method was illustrated by a gram-scale experiment and subsequent efficient synthesis of the γ-amino acid analogue.
Metal-Controlled, Regioselective, Direct Intermolecular α- or γ-Amination with Azodicarboxylates.
Xin Fu,Heng Bai,Guo-Dong Zhu,Yan Huang,Shu‐Yu Zhang
Published 2018 in Organic Letters
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- Publication year
2018
- Venue
Organic Letters
- Publication date
2018-05-30
- Fields of study
Medicine, Chemistry
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Semantic Scholar, PubMed
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