Transition-Metal-Free Oxidative Aliphatic C-H Azidation
Xiaofei Zhang1, Haodong Yang1, Pingping Tang1
1State Key Laboratory and Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai Unviersity , Tianjin 300071, China.
Organic Letters
|November 17, 2015
Summary
Researchers developed a new method for selective azidation of unactivated aliphatic C-H bonds using sulfonyl azides. This transition-metal-free approach is simple, scalable, and useful for late-stage synthesis of organic azides.
Area of Science:
- Organic Chemistry
- Synthetic Chemistry
Background:
- Selective functionalization of aliphatic C-H bonds remains a significant challenge in organic synthesis.
- Developing practical methods for introducing azide groups is crucial for creating diverse nitrogen-containing compounds.
Purpose of the Study:
- To report the first practical and selective azidation of unactivated aliphatic C-H bonds.
- To establish a transition-metal-free method using readily available sulfonyl azides.
Main Methods:
- Exploration of a novel reaction pathway for C-H azidation.
- Utilizing sulfonyl azides as a safe and convenient azide source.
- Optimization of reaction conditions for selectivity and efficiency.
Main Results:
- Demonstration of a practical and selective azidation of unactivated aliphatic C-H bonds.
- Successful application of easily handled sulfonyl azides without transition metals.
- Operational simplicity, scalability, and applicability to late-stage functionalization.
Conclusions:
- This work presents a valuable new method for the synthesis of organic azides.
- The developed method offers a straightforward and efficient route to azidation of complex molecules.
- The approach is suitable for late-stage modification of natural products and derivatives.
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