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On the Origin of the Promoting Effect Exerted by Magnesium in the ZnCl(2)-Catalyzed Synthesis of N,N-Diisopropylethylamine

[Image: see text] The reaction of magnesium or zinc amides with alkyl or benzyl halides is an attractive approach to make C–N bonds, especially for electron-poor organic halides. The magnesium-promoted preparation of hindered non-nucleophilic amine (N,N-diisopropylethylamine) from ethyl chloride and...

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Autores principales: Hong, Zeng, Ruan, Jiancheng, Chen, Xinzhi, Qian, Chao, Ge, Xin, Zhou, Shaodong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7689953/
https://www.ncbi.nlm.nih.gov/pubmed/33251426
http://dx.doi.org/10.1021/acsomega.0c04188
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author Hong, Zeng
Ruan, Jiancheng
Chen, Xinzhi
Qian, Chao
Ge, Xin
Zhou, Shaodong
author_facet Hong, Zeng
Ruan, Jiancheng
Chen, Xinzhi
Qian, Chao
Ge, Xin
Zhou, Shaodong
author_sort Hong, Zeng
collection PubMed
description [Image: see text] The reaction of magnesium or zinc amides with alkyl or benzyl halides is an attractive approach to make C–N bonds, especially for electron-poor organic halides. The magnesium-promoted preparation of hindered non-nucleophilic amine (N,N-diisopropylethylamine) from ethyl chloride and zinc diisopropylamide has been studied. In this paper, instead of the application scope of this method, we focused on the mechanisms of the catalytic processes and the associated electronic origins. According to the calculations, the C–N coupling process in all selected systems proceed preferably in an ethylium-transfer mode. Further, rather than undergoing the Grignard reaction route, the more pronounced electronic interactions within the transition structure as induced by the “innocent” magnesium atom should be responsible for the observed high catalytic activity of the Mg/ZnCl(2) combination.
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spelling pubmed-76899532020-11-27 On the Origin of the Promoting Effect Exerted by Magnesium in the ZnCl(2)-Catalyzed Synthesis of N,N-Diisopropylethylamine Hong, Zeng Ruan, Jiancheng Chen, Xinzhi Qian, Chao Ge, Xin Zhou, Shaodong ACS Omega [Image: see text] The reaction of magnesium or zinc amides with alkyl or benzyl halides is an attractive approach to make C–N bonds, especially for electron-poor organic halides. The magnesium-promoted preparation of hindered non-nucleophilic amine (N,N-diisopropylethylamine) from ethyl chloride and zinc diisopropylamide has been studied. In this paper, instead of the application scope of this method, we focused on the mechanisms of the catalytic processes and the associated electronic origins. According to the calculations, the C–N coupling process in all selected systems proceed preferably in an ethylium-transfer mode. Further, rather than undergoing the Grignard reaction route, the more pronounced electronic interactions within the transition structure as induced by the “innocent” magnesium atom should be responsible for the observed high catalytic activity of the Mg/ZnCl(2) combination. American Chemical Society 2020-11-11 /pmc/articles/PMC7689953/ /pubmed/33251426 http://dx.doi.org/10.1021/acsomega.0c04188 Text en © 2020 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
spellingShingle Hong, Zeng
Ruan, Jiancheng
Chen, Xinzhi
Qian, Chao
Ge, Xin
Zhou, Shaodong
On the Origin of the Promoting Effect Exerted by Magnesium in the ZnCl(2)-Catalyzed Synthesis of N,N-Diisopropylethylamine
title On the Origin of the Promoting Effect Exerted by Magnesium in the ZnCl(2)-Catalyzed Synthesis of N,N-Diisopropylethylamine
title_full On the Origin of the Promoting Effect Exerted by Magnesium in the ZnCl(2)-Catalyzed Synthesis of N,N-Diisopropylethylamine
title_fullStr On the Origin of the Promoting Effect Exerted by Magnesium in the ZnCl(2)-Catalyzed Synthesis of N,N-Diisopropylethylamine
title_full_unstemmed On the Origin of the Promoting Effect Exerted by Magnesium in the ZnCl(2)-Catalyzed Synthesis of N,N-Diisopropylethylamine
title_short On the Origin of the Promoting Effect Exerted by Magnesium in the ZnCl(2)-Catalyzed Synthesis of N,N-Diisopropylethylamine
title_sort on the origin of the promoting effect exerted by magnesium in the zncl(2)-catalyzed synthesis of n,n-diisopropylethylamine
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7689953/
https://www.ncbi.nlm.nih.gov/pubmed/33251426
http://dx.doi.org/10.1021/acsomega.0c04188
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