Synthesis of Azulene Derivatives from 2<em>H</em>-Cyclohepta[<em>b</em>]furan-2-ones as Starting Materials: Their Reactivity and Properties

A variety of synthetic methods have been developed for azulene derivatives due to their potential applications in pharmaceuticals and organic materials. Particularly, 2<i>H</i>-cyclohepta[<i>b</i>]furan-2-one and its derivatives have been frequently used as promising precurso...

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Bibliographic Details
Main Authors: Taku Shoji, Shunji Ito, Masafumi Yasunami
Format: Article
Language:English
Published: MDPI AG 2021-10-01
Series:International Journal of Molecular Sciences
Subjects:
Online Access:https://www.mdpi.com/1422-0067/22/19/10686
Description
Summary:A variety of synthetic methods have been developed for azulene derivatives due to their potential applications in pharmaceuticals and organic materials. Particularly, 2<i>H</i>-cyclohepta[<i>b</i>]furan-2-one and its derivatives have been frequently used as promising precursors for the synthesis of azulenes. In this review, we describe the development of the synthesis of azulenes by the reaction of 2<i>H</i>-cyclohepta[<i>b</i>]furan-2-ones with olefins, active methylenes, enamines, and silyl enol ethers as well as their reactivity and properties.
ISSN:1661-6596
1422-0067