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Overcrowded molecules. V. 3,10‐dimethyl‐1,12‐bis(2‐pyridyl)benzo[ c ] phenanthrene‐2,11‐diol
Author(s) -
Fields D. L.,
Regan T. H.
Publication year - 1973
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570100212
Subject(s) - chemistry , phenanthrene , ketene , adduct , anthracene , diol , intramolecular force , zwitterion , medicinal chemistry , acetal , molecule , stereochemistry , organic chemistry
The bis ketene acetal adduct of 4a,10a‐diazoniaanthra[1,2‐α]anthracene diperchlorate ( 10 ) was used to prepare the highly overcrowded benzo[ c ]phenanthrene 2 by a known procedure. Its oxidation with cupric chloride provided the isoxazolium zwitterion, 3 , via an intramolecular cyclization.