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Updated: Aug 7, 2025
07:06
A Microwave-Assisted Direct Heteroarylation of Ketones Using Transition Metal Catalysis
Published on: February 16, 2020
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Fluorosulfonamide-Directed Heteroarylation of Aliphatic C(sp3)-H Bonds
Emily N Pinter1, Zachary S Sheldon1, Atanu Modak1
1Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405-7102, United States.
The Journal of Organic Chemistry
|March 13, 2023
Summary
This study introduces a new method for directly attaching alkyl groups to heterocycles using unactivated amines. This efficient process simplifies the synthesis of valuable compounds from basic starting materials.
Area of Science:
- Organic Chemistry
- Synthetic Chemistry
Background:
- Direct functionalization of C-H bonds in heterocycles remains a significant challenge in organic synthesis.
- Developing efficient methods for alkylating heterocycles with unactivated aliphatic amines is crucial for accessing diverse chemical structures.
Purpose of the Study:
- To develop a novel dehydrogenative cross-coupling reaction for the direct alkylation of heterocycles.
- To merge N-F-directed 1,5-hydrogen atom transfer (HAT) with Minisci chemistry for predictable site selectivity.
Main Methods:
- A formal dehydrogenative cross-coupling reaction was employed.
- The methodology combines N-F-directed 1,5-HAT with Minisci chemistry.
- The reaction utilizes unactivated aliphatic amines and common heterocycles.
Main Results:
- Successful direct alkylation of heterocycles with unactivated aliphatic amines was achieved.
- Predictable site selectivity was observed due to the merged methodologies.
- The transformation offers a direct route from simple alkyl amines to value-added products.
Conclusions:
- The developed method provides a mild and efficient route for C(sp3)-H heteroarylation.
- This approach facilitates the synthesis of complex molecules from readily available starting materials.
- The reaction is an attractive option for the late-stage functionalization of heterocycles.
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