Volume 136, Issue 1 e202313807
Forschungsartikel

Dearomative Insertion of Fluoroalkyl Carbenes into Azoles Leading to Fluoroalkyl Heterocycles with a Quaternary Center

Linxuan Li

Linxuan Li

Department of Chemistry, Northeast Normal University, Changchun, 130024 China

These authors contributed equally to this work.

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Yongquan Ning

Yongquan Ning

Department of Chemistry, Northeast Normal University, Changchun, 130024 China

These authors contributed equally to this work.

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Hongzhu Chen

Hongzhu Chen

Department of Chemistry, Northeast Normal University, Changchun, 130024 China

These authors contributed equally to this work.

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Yongyue Ning

Yongyue Ning

Department of Chemistry, Northeast Normal University, Changchun, 130024 China

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Dr. Paramasivam Sivaguru

Dr. Paramasivam Sivaguru

Department of Chemistry, Northeast Normal University, Changchun, 130024 China

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Peiqiu Liao

Peiqiu Liao

Department of Chemistry, Northeast Normal University, Changchun, 130024 China

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Qingwen Zhu

Qingwen Zhu

Department of Chemistry, Northeast Normal University, Changchun, 130024 China

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Yong Ji

Yong Ji

Department of Chemistry, Northeast Normal University, Changchun, 130024 China

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Graham de Ruiter

Graham de Ruiter

Schulich Faculty of Chemistry, Technion Israel Institute of Technology, Technion City, 3200008 Haifa, Israel

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Prof. Xihe Bi

Corresponding Author

Prof. Xihe Bi

Department of Chemistry, Northeast Normal University, Changchun, 130024 China

State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071 China

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First published: 15 November 2023

Abstract

The skeletal ring expansion of heteroarenes through carbene insertion is gaining popularity in synthetic chemistry. Efficient strategies for heterocyclic ring expansion to access heterocycles containing a fluoroalkyl quaternary carbon center through fluoroalkyl carbene insertion are highly desirable because of their broad applications in medicinal chemistry. Herein, we report a general strategy for the dearomative one-carbon insertion of azoles using fluoroalkyl N-triftosylhydrazones as fluoroalkyl carbene precursors, resulting in ring-expanded heterocycles in excellent yields with good functional-group compatibility. The broad generality of this methodology in the late-stage diversification of pharmaceutically interesting bioactive molecules and versatile transformations of the products has been demonstrated.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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