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Synthèses dans le Domaine des Composés Polycycliques Aromatiques. XVIII — 1,2,3,4,5,6-Tribenzofluorène (Ou Tribenzo [a,c,g] Flourène) Et 1,2,3,4,5,6,7,8-Tétrabenzofluoréne (ou Tétrabenzo [a,c,g,i] Flourène)

✍ Scribed by R. De Ridder; R. H. Martin

Publisher
Wiley (John Wiley & Sons)
Year
2010
Weight
785 KB
Volume
69
Category
Article
ISSN
0037-9646

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✦ Synopsis

Abstract

This paper describes the synthesis of the following compounds: tribenzo [a,c,g] fluorene (I → IV), tetrabenzo [a,c,g,i] fluorene (VI → X), 9‐(1‐naph‐tyl) phenanthrene and 9‐(2‐naphtyl) phenanthrene.

The bromination of 9‐amino‐ and 9‐acetylaminophenanthrene, using either bromine or N‐bromosuccinimide, is also reported.

U. V. spectra of the end products and of a few intermediates have been recorded (Fig. I, II, III and IV).

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## Abstract The synthesis of hexabenz‐1,12;2,3;4,5;6,7;8,9;10,11‐coronene, using two different reaction schemes is described. The cyclodehydrogenation of hexaphenylbenzene, and the reaction of dibenz‐1,9;2,3‐anthrone with Zn/ZnCl~2~ lead to identical products, the chemical and crystallographic prop