Modular and practical diamination of allenes

Jian-Jun Dai, Xianglin Yin, Lei Li, Mario E. Rivera, Ye-Cheng Wang () and Mingji Dai ()
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Jian-Jun Dai: Purdue University
Xianglin Yin: Purdue University
Lei Li: Purdue University
Mario E. Rivera: Purdue University
Ye-Cheng Wang: Purdue University
Mingji Dai: Purdue University

Nature Communications, 2023, vol. 14, issue 1, 1-10

Abstract: Abstract Vicinal diamines are privileged scaffolds in medicine, agrochemicals, catalysis, and other fields. While significant advancements have been made in diamination of olefins, diamination of allenes is only sporadically explored. Furthermore, direct incorporation of acyclic and cyclic alkyl amines onto unsaturated π systems is highly desirable and important, but problematic for many previously reported amination reactions including the diamination of olefins. Herein, we report a modular and practical diamination of allenes, which offers efficient syntheses of β,γ-diamino carboxylates and sulfones. This reaction features broad substrate scope, excellent functional group tolerability, and scalability. Experimental and computational studies support an ionic reaction pathway initiated with a nucleophilic addition of the in situ formed iodoamine to the electron deficient allene substrate. An iodoamine activation mode via a halogen bond with a chloride ion was revealed to substantially increase the nucleophilicity of the iodoamine and lower the activation energy barrier for the nucleophilic addition step.

Date: 2023
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DOI: 10.1038/s41467-023-37345-8

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