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Diels-Alder versus heterodiene reaction: The effect of acid catalysis.

✍ Scribed by A.Corsico Coda; G. Desimoni; A.Gamba Invernizzi; P.P. Righetti; G. Tacconi

Publisher
Elsevier Science
Year
1985
Tongue
French
Weight
205 KB
Volume
26
Category
Article
ISSN
0040-4039

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Variously substituted 2(1H-pyrazinones react with acetylenic derivatives to give specifically substituted pyridones or pyridines. The observed selectivity can be explained in terms of HO-LU interactions for the reagents and two competitive retro Diets-Alder reactions of the primary bicycloadducts. W