Substituent changes in the salen ligands of CuIINaI-complexes to induce various structures and catalytic activities towards 2-imidazolines from nitriles and 1,2-diaminopropane

Quan-Quan Li; Peng-Xiu He; Jin Zhang; Ji-Dong Zhang; Yu-Meng Xin; Ping Liu; Yao-Yu Wang; Jian-Li Li

doi:10.1039/C9CC00879A

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Substituent changes in the salen ligands of Cu^IINa^I-complexes to induce various structures and catalytic activities towards 2-imidazolines from nitriles and 1,2-diaminopropane†

Quan-Quan Li,‡^a Peng-Xiu He,‡^a Jin Zhang,

^b Ji-Dong Zhang,^c Yu-Meng Xin,^a Ping Liu,

*^a Yao-Yu Wang

^a and Jian-Li Li

*^a

Author affiliations

* Corresponding authors

^a Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, P. R. China
E-mail: liuping@nwu.edu.cn, lijianli@nwu.edu.cn

^b College of Chemistry & Chemical Engineering, Shaanxi University of Science & Technology, Xi’an 710021, P. R. China

^c Department of Chemistry and Chemical Engineering, Ankang University, Ankang Shaanxi, P. R. China

Abstract

Based on various comparable salen ligands, three synthesized Cu^IINa^I-complexes present efficient catalytic activities for the coupling and cyclization reaction of 1,2-diaminopropane with nitriles towards 2-imidazolines. The catalytic results show that salen ligands with an electron-donating substituent and small steric hindrance improve the catalytic activity.

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Article information

DOI: https://doi.org/10.1039/C9CC00879A
Article type: Communication
Submitted: 30 Jan 2019
Accepted: 19 Mar 2019
First published: 20 Mar 2019

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Chem. Commun., 2019,55, 4619-4622

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Substituent changes in the salen ligands of Cu^IINa^I-complexes to induce various structures and catalytic activities towards 2-imidazolines from nitriles and 1,2-diaminopropane

Q. Li, P. He, J. Zhang, J. Zhang, Y. Xin, P. Liu, Y. Wang and J. Li, Chem. Commun., 2019, 55, 4619 DOI: 10.1039/C9CC00879A

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