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- W2496140584 abstract "Publisher Summary This chapter discusses the developments in arylbenzene synthesis (with particular emphasis on linked phenylene systems) including examples of applications to natural product synthesis and extensions to terphenyls and higher oligomers. The chapter presents a structural and synthetic survey of phenylene oligomers applied in host-guest chemistry, and reports studies of the chemical and physico-chemical properties of biphenyls. The proton NMR spectrum of biphenylene is consistent with reduced diamagnetic ring currents in the benzene rings since the resonances are at relatively high field, 6.62 ppm (α-protons) and 6.73 ppm (β-protons), compared with benzene 7.27 ppm. These shifts, and in particular the higher field resonance of the α-protons, are rationalized on the basis that the four-membered ring sustains a paramagnetic ring-current characteristic of anti-aromatic cycles. The synthesis of arylbenzenes is discussed via the coupling reactions mediated by arylcopper derivatives, aryl-aryl coupling catalysed or mediated by nickel compounds, and aryl-aryl coupling catalysed by palladium or its compounds. The materials based on bi- and polyphenylenes are also described." @default.
- W2496140584 created "2016-08-23" @default.
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- W2496140584 date "1991-01-01" @default.
- W2496140584 modified "2023-09-23" @default.
- W2496140584 title "Aryl benzenes and their derivatives" @default.
- W2496140584 doi "https://doi.org/10.1016/b978-044453347-0.50120-8" @default.
- W2496140584 hasPublicationYear "1991" @default.
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