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A new approach to symmetric 2,2′:6′,2″-terpyridines

✍ Scribed by James C. Adrian Jr.; Lamyaa Hassib; Norbert De Kimpe; Marian Keppens

Book ID
104208441
Publisher
Elsevier Science
Year
1998
Tongue
French
Weight
404 KB
Volume
54
Category
Article
ISSN
0040-4020

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✦ Synopsis

A novel four step process for the preparation of symmetric terpyridines is presented. The title compound, 2,2':6',2"-terpyridine (la) and a substituted derivative, 5,5"-dimethyl-2,2':6',2"terpyridine (lb) are prepared. Both la and lb share a common precursor, 2,6-diacetylpyridine (2) and are prepared in overall yields of 73 and 93% respectively. The purities of the crude terpyridine products are in the 90-95% range.

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✍ Dmitry N. Kozhevnikov; Valery N. Kozhevnikov; Tatiana V. Nikitina; Vladimir L. R 📂 Article 📅 2002 🏛 Elsevier Science 🌐 French ⚖ 94 KB

A new methodology for the synthesis of functionalised 2,2%:6%,2%%-terpyridine systems is suggested: sequential synthesis of the heterocyclic assemblies based on the 1,2,4-triazine ring, direct introduction of the cyano group in the 1,2,4-triazine ring and the transformation of the latter to a pyridi