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DOI: 10.1055/a-2052-3331
Aliphatic Acylhydrazides as Effective Alkylating Agents for the Copper-Catalyzed Oxidative Cyclization of N-Arylacrylamides
The project was supported by the National Natural Science Foundation of China (22271269).
Dedicated to Professor Guoqiang Lin on the occasion of his 80th birthday.
Abstract
An unprecedented use of readily accessible aliphatic acylhydrazides as alkylating agents has been demonstrated in the copper-catalyzed tandem alkylation/cyclization of N-arylacrylamides. A range of aliphatic acylhydrazides smoothly participated in the oxidative 5-exo-trig cyclization of N-arylacrylamides with CuCO3 as the catalyst and DTBP as the oxidant, delivering structurally diverse 3,3-dialkyloxindoles in moderate to good yields. This study paves the way for the synthetic applications of aliphatic acylhydrazides as alkyl radical precursors.
Supporting Information
- Supporting information for this article is available online at https://doi.org/10.1055/a-2052-3331.
- Supporting Information
Publication History
Received: 10 February 2023
Accepted after revision: 10 March 2023
Accepted Manuscript online:
10 March 2023
Article published online:
13 April 2023
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