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8394981 
Journal Article 
Synthese und Reaktionen des Diels-Alder-Addukts aus Pyren und Hexachlorcyclopentadien 
Blã¼Mer, GP; Zander, M 
1979 
1 
Monatshefte für Chemie / Chemical Monthly
ISSN: 0026-9247
EISSN: 1434-4475 
Springer-Verlag 
110 
5 
1233-1236 
German 
The Diels-Alder adduct 2 from pyrene and hexachlorocyclopentadiene exhibits a different substitution pattern than pyrene itself, namely that of phenanthrene. By reactions with the adduct following Retro-Diels-Alder splitting, pyrene substitution products are accessible that cannot be obtained by direct substitution of pyrene. This is demonstrated by the synthesis of 4-chloropyrene (5) and 4-bromopyrene (6). © 1979 Springer-Verlag. 
4-Halo-pyrenes; Diels Alder reaction; Pyrene