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Diels-alder addition of benzyne to 1-methyl-2-pyridones

✍ Scribed by Eric B. Sheinin; George E. Wright; Charles L. Bell; Ludwig Bauer

Book ID: 112121854
Publisher: Journal of Heterocyclic Chemistry
Year: 1968
Tongue: English
Weight: 301 KB
Volume: 5
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.5570050620

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## Abstract 1‐Methyl‐3,6,8‐trinitro‐2‐quinolone **(1)** behaved as the dienophile in Diels‐Alder reactions with dienes. When cyclopentadiene was used, cycloadduct **4** was obtained, which was then aromatized on treatment with triethylamine. In the reaction of **1** with hydrazone of 2‐butenal, phe