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Products from metallation and attempted metallation of 1-alkyl-4,6-diphenyl-2-pyridones and subsequent reaction with electrophiles

โœ Scribed by Alan Roy Katritzky; Nicholas E. Grzeskowiak; Hector J. Salgado; Zakaria bin Bahari


Publisher
Elsevier Science
Year
1980
Tongue
French
Weight
242 KB
Volume
21
Category
Article
ISSN
0040-4039

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Unexpected products from the reactions o
โœ Frederick Cassidy; John M Evans; Duncan M Smith; Geoffrey Stemp ๐Ÿ“‚ Article ๐Ÿ“… 1987 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 173 KB

The title reactions furnished the pyran ring cleaved product (3) and the tetracyclic chromene (5), rather than the expected 4-cyclicamido-3hydroxy benzopyrans (l,R=CN and NO2, respectively, n=ll). Mechanisms proposed for these reactions require a strong electron withdrawing group at C(6) in the benz