Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Pschorr synthesis of phenanthrenes

Intramolecular arylations can also be carried out photochemically. Huisgen and Zahler (1963 a) prepared fluoren-9-one by irradiation of benzophenone-diazonium salts in dilute sulfuric acid. The classical Pschorr synthesis of phenanthrene-9-carb-... [Pg.281]

Intramolecular arylation is an important step in the Pschorr synthesis of phenanthrene from cis-o-aminostilbene. ... [Pg.458]

Pschorr synthesis. The Pschorr synthesis of phenanthrene derivatives is usually carried out with copper powder. Australian chemists1 report that a diazotized 2-phenyl-3-(2-aminophenyl)acrylic acid of type (1) undergoes practically instantaneous cyclization in the presence of sodium iodide (acetone is used as solvent). When copper powder is added the Pschorr method requires more than ten hours and the yield is 55%. [Pg.339]

See other pages where Pschorr synthesis of phenanthrenes is mentioned: [Pg.213]   
See also in sourсe #XX -- [ Pg.969 ]



SEARCH



Of phenanthrenes

Phenanthren

Phenanthrene

Phenanthrene Pschorr synthesis

Phenanthrene synthesis

Phenanthrenes

Phenanthrenes synthesis

© 2024 chempedia.info