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Catalytic asymmetric dearomatization reactions.

Chun-Xiang Zhuo1, Wei Zhang, Shu-Li You

  • 1State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China.

Angewandte Chemie (International Ed. in English)
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Summary

This review covers catalytic asymmetric dearomatization (CADA) reactions, detailing various methods like oxidative, Diels-Alder, and alkylative approaches for synthesizing complex molecules. It highlights CADA

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Area of Science:

  • Organic Chemistry
  • Asymmetric Synthesis
  • Catalysis

Background:

  • Dearomatization reactions are crucial for transforming aromatic compounds into valuable non-aromatic structures.
  • Catalytic asymmetric dearomatization (CADA) enables the enantioselective synthesis of chiral molecules from arenes.
  • Developing efficient CADA strategies is essential for accessing complex molecular architectures.

Purpose of the Study:

  • To provide a comprehensive overview of the advancements in catalytic asymmetric dearomatization (CADA) reactions.
  • To categorize and discuss diverse CADA methodologies, including oxidative, cycloaddition, alkylative, and transition-metal-catalyzed approaches.
  • To offer a conceptual framework for understanding and developing new CADA reactions.

Main Methods:

  • Review of literature on various CADA reaction classes.
  • Discussion of oxidative dearomatization, Diels-Alder and related reactions.
  • Analysis of alkylative dearomatization, transition-metal-catalyzed reactions, and cascade sequences.

Main Results:

  • Summarizes a wide array of CADA reactions, showcasing their versatility.
  • Highlights key developments in enantioselective dearomatization of electron-rich arenes and pyridinium derivatives.
  • Includes brief introductions to reactions employing chiral auxiliaries and those involving dearomatized substrates.

Conclusions:

  • Catalytic asymmetric dearomatization is a rapidly evolving field with diverse synthetic applications.
  • The reviewed methods provide powerful tools for constructing chiral molecules from simple aromatic precursors.
  • This review offers a conceptual foundation for future research in CADA.