Volume 137, Issue 30 e202507313
Zuschrift

Switchable Regiodivergent Reductive Alkyl–Alkyl Coupling by Nickel Catalysis: Sorting Different Alkyl–Nickel Intermediates

Dr. Quan-Xing Zi

Dr. Quan-Xing Zi

Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Guangming Advanced Research Institute, Shenzhen Grubbs Institute, Department of Chemistry, and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong, 518055 P.R. China

Both authors contributed equally to this work.

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Dr. Lin Min

Dr. Lin Min

Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Guangming Advanced Research Institute, Shenzhen Grubbs Institute, Department of Chemistry, and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong, 518055 P.R. China

Both authors contributed equally to this work.

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Hai-Wu Du

Hai-Wu Du

Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Guangming Advanced Research Institute, Shenzhen Grubbs Institute, Department of Chemistry, and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong, 518055 P.R. China

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Dr. Qiong Yu

Dr. Qiong Yu

Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Guangming Advanced Research Institute, Shenzhen Grubbs Institute, Department of Chemistry, and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong, 518055 P.R. China

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Prof. Dr. Yu-Long Li

Prof. Dr. Yu-Long Li

College of Chemistry and Environmental Engineering, Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan, Sichuan University of Science and Engineering, Zigong, Sichuan, 643000 P.R. China

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Prof. Dr. Wei Shu

Corresponding Author

Prof. Dr. Wei Shu

Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Guangming Advanced Research Institute, Shenzhen Grubbs Institute, Department of Chemistry, and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong, 518055 P.R. China

College of Chemistry and Environmental Engineering, Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan, Sichuan University of Science and Engineering, Zigong, Sichuan, 643000 P.R. China

E-mail: [email protected]

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Dedicated to the 60th anniversary of Sichuan University of Science and Engineering

First published: 13 May 2025

Abstract

Site-selective and divergent functionalizations on saturated alkyl chain at specific unfunctionalized positions is a key challenge in organic chemistry and other related areas and offers unprecedented synthetic opportunities. Herein, a ligand-controlled Ni-catalyzed site-selective and divergent alkyl–alkyl reductive coupling between two different alkyl halides has been developed. Notably, the reaction finely tunes and recognizes thermodynamic favored α-aminoalkyl radicals over β-aminoalkyl radicals, and distal ipso-alkyl radicals to deliver chemo- and position-selective alkylation of unactivated α-H and β-H of amines under reductive conditions. Moreover, the reaction selectively functionalizes one alkyl chain over two migratable alkyl chains. By just switching the catalytic parameters, α- and β-alkylation of saturated C─H bonds, and ipso-alkyl-alkyl coupling allow for rapid access to three types of branched aliphatic amine architectures from identical starting materials.

Conflict of Interests

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the Supporting Information of this article.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.