par Lambert, Hasso P.;Martin, Richard
Référence Bulletin des Sociétés chimiques belges, 61, 3-4, page (124-131)
Publication Publié, 1952
Article révisé par les pairs
Résumé : Summary. ‐ The unknown heptacyclic aromatic hydrocarbon 1,2,3,4,5,6,7,8‐tetrabenzanthracene (V) has been synthesized by the Elb's pyrolysis of 9‐(10'‐methyl‐9'‐phenanthroyl‐)phenanthrene (IV). This ketone was prepared by a Grignard reaction between 9‐cyanophenanthrene and 10‐methyl‐9‐phenanthroyl‐magnesium‐bromide. The action of N‐bromosuccinimide upon 9‐methylphenanthrene affords either 9‐bromo‐10‐methyl‐or 9‐bromomethyl‐phenanthrene according to the experimental conditions used. 1,2,3,4,5,6,7,8‐tetrabenzanthracene has been oxidized to the corresponding quinone (VI). Attempts to prepare 9,10‐dimethyl‐1,2,3,4,5,6,7,8‐tetrabenzanthracene from the above quinone have so far failed. Copyright © 1952 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim