Construction of a Highly Distorted Benzene Ring in a Double Helicene1. (15th October 2014)

• Record Type: Journal Article
• Authors: Hashimoto, Sigma; Nakatsuka, Soichiro; Nakamura, Masaharu; Hatakeyama, Takuji
• Is Part Of: Angewandte Chemie. Volume 126:Number 51(2014)
• Page Start: 14298
• Page End: 14300
• Publication Date: 2014-10-15
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201408390
• Languages: English
• ISSNs: 0044-8249

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>A P‐fused double helicene consisting of a highly distorted benzene ring, with a bending angle of 23°, has been synthesized by a tandem intramolecular phospha‐Friedel–Crafts reaction. Despite the distortion and reduced aromaticity, the double helicene shows thermal and chemical stability. These are important features that make these compounds attractive for applications as a new C₂‐symmetric bisphosphine ligand. The simple strategy proposed in this work can be used to prepare a diverse range of distorted molecules.</p> </abstract>