期刊
CHEMICAL RECORD
卷 -, 期 -, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/tcr.202300101
关键词
Cyclization; Dearomatization; Green chemistry; Heterocycles; Metal-free
The metal-free dearomatization reactions have proven to be a green and sustainable method for constructing spirocyclic, polycyclic, and heterocyclic scaffolds. This review focuses on recent advances in metal-free dearomatization reactions, including organo-catalyzed, oxidative, Bronsted acid- or base-promoted, photoredox-catalyzed, and electrochemical oxidation dearomatization reactions.
The highly efficient construction of complicated heterocyclic frameworks in an atom- and step-economic manner is still one of the cores of synthetic chemistry. Dearomatization reactions show the unique advantage for the construction of functionalized heterocycles and have attracted widespread attention over the past two decades. The metal-free approach has proved to be a green and sustainable paradigm for the synthesis of spirocyclic, polycyclic and heterocyclic scaffolds, which are widely present in natural products and bioactive molecules. In this review, the advances in the recent six years (2017-2023) in metal-free dearomatization reactions are highlighted. Emphasis is placed on developments in the field of organo-catalyzed dearomatization reactions, oxidative dearomatization reactions, Bronsted acid- or base-promoted dearomatization reactions, photoredox-catalyzed dearomatization reactions, and electrochemical oxidation dearomatization reactions.
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