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Phthalonitriles by hetero Diels-Alder reactions of 4,5-dicyanopyridazine with enamines: isolation and characterization of unprecedented intermediates

✍ Scribed by Rodolfo Nesi; Stefania Turchi; Donatella Giomi; Camilla Corsi

Book ID
104208781
Publisher
Elsevier Science
Year
1998
Tongue
French
Weight
321 KB
Volume
54
Category
Article
ISSN
0040-4020

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✦ Synopsis

The title conversions were shown to involve as key intermediates new dicyanodiene systems, that can be isolated in high fields under mild conditions; their structures, inferred from analytical and spectral data, were confirmed by an X-ray study. Some improvements for the synthetic methodology connected with this finding are discussed.

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ChemInform Abstract: Reactions of 4,5-Dicyanopyridazine with Alkynes and Enamines: A New Straightforward Complementary Route to 4-Mono- and 4,5-Disubstituted Phthalonitriles.
✍ S. TURCHI; R. NESI; D. GIOMI 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 32 KB 👁 1 views

Reactions of 4,5-Dicyanopyridazine with Alkynes and Enamines: A New Straightforward Complementary Route to 4-Mono-and 4,5-Disubstituted Phthalonitriles. -The title pyridazine (I) is a valuable synthon for alternative direct approaches to phthalonitriles from dienophiles of type (II) and (IV). The n