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Preparation of Stable Bicyclic Aziridinium Ions and Their Ring-Opening for the Synthesis of Azaheterocycles
Published on: August 22, 2018
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C-H Functionalization of Azines.
Kei Murakami1, Shuya Yamada1, Takeshi Kaneda1
1Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science, and ‡JST-ERATO, Itami Molecular Nanocarbon Project, Nagoya University , Chikusa, Nagoya 464-8602, Japan.
Chemical Reviews
|April 27, 2017
Summary
This review covers recent advances in C-H functionalization of azines, focusing on regioselective methods for these important aromatic compounds. It details strategies including SNAr, radical, deprotonation, and metal-catalyzed reactions for efficient synthesis.
Area of Science:
- Organic Chemistry
- Materials Science
- Medicinal Chemistry
Background:
- Azines are six-membered aromatic heterocycles containing nitrogen atoms.
- They are crucial structural motifs in biologically active molecules and advanced materials.
- Efficient synthesis of functionalized azines is vital for various scientific applications.
Purpose of the Study:
- To review recent progress in the C-H functionalization of azines.
- To highlight regioselective strategies for modifying azine cores.
- To categorize and discuss different synthetic methodologies.
Main Methods:
- The review categorizes C-H functionalization methods into four main types.
- These include nucleophilic aromatic substitution (SNAr) reactions.
- Radical reactions, deprotonation/functionalization, and metal-catalyzed reactions are also discussed.
Main Results:
- C-H functionalization offers rapid and atom-economical routes to azine derivatives.
- Regioselective functionalization is key due to varying C-H bond reactivities in azines.
- Recent advances enable precise modification of azine structures for tailored applications.
Conclusions:
- C-H functionalization is a powerful tool for synthesizing functionalized azines.
- The development of regioselective methods is crucial for advancing azine chemistry.
- This review provides a comprehensive overview of current strategies and future directions.
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