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A new synthesis of naphtho[2,3-C]pyrroles. Conversion of naphtho[2,3-C]thiophene-4,9-diones to naphtho[2,3-C]pyrrole-4,9-diones

โœ Scribed by Paul E. Marecki; Gregory P. Butke


Book ID
112127265
Publisher
Journal of Heterocyclic Chemistry
Year
1983
Tongue
English
Weight
294 KB
Volume
20
Category
Article
ISSN
0022-152X

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A new synthetic route to 2-substituted n
โœ Jyunichi Koyanagi; Katsumi Yamamoto; Kouji Nakayama; Akira Tanaka ๐Ÿ“‚ Article ๐Ÿ“… 1997 ๐Ÿ› Journal of Heterocyclic Chemistry ๐ŸŒ English โš– 476 KB

## Abstract 4,9โ€Dimethoxynaphtho[2,3โ€__b__]furan 9 was obtained in 91% yield __via__ the reductive methylation of naphtho[2,3โ€__b__]furanโ€4,9โ€dione 2. After treatment of 9 with butyllithium, the mixture was allowed to react with __N,N__โ€dimethylacetamide, followed by oxidization with cerium(IV) dia