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A Novel Transformation of a Calicene to an Azulenofulvene

✍ Scribed by Prof. Dr. Zen-ichi Yoshida; Mitsuhiro Shibata; Eiji Ogino; Dr. Toyonari Sugimoto


Publisher
John Wiley and Sons
Year
1985
Tongue
English
Weight
224 KB
Volume
24
Category
Article
ISSN
0044-8249

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Regiospecific phenylation of pyridine derivatives at the 4-position takes place in the reaction of 4-methylpyridinium salts 1 with other pyridinium salts 2 by intermolecular transformation of the pyridine ring in 1 and participation of the methyl group of 2. The method developed makes it possible to