ChemInform Abstract: Fullerene Tectonics. Part 2. Synthesis and Pyrolysis of Halogenated Benzo[c]phenanthrenes.

✍ Scribed by M. J. PLATER

• Publisher: John Wiley and Sons
• Year: 2010
• Weight: 34 KB
• Volume: 29
• Category: Article
• ISSN: 0931-7597
• DOI: 10.1002/chin.199805097

✦ Synopsis

Tectonics. Part 2. Synthesis and Pyrolysis of Halogenated Benzo[c]phenanthrenes. -Halogenated benzo[c]phenanthrenes (IV) or (VIII) with a halogen in the hindered fiord region are prepared by photochemical cyclization of appropriately substituted stilbenes. Flash vacuum pyrolysis induces ring closure and gives the corresponding benzo[ghi]fluoranthrenes (VI) and (IX) in moderate yields. At higher temperatures, a competing rearrangement pathway to cyclopenta[cd]pyrene (VII) occurs. -(PLATER, M.