Winter, Andreas; Egbe, Daniel A. M.; Schubert, Ulrich S. published the article 《Rigid π-Conjugated Mono-, Bis-, and Tris(2,2′:6′,2”-terpyridines)》. Keywords: pi conjugated linear star mono bis tris terpyridine synthesis; Horner Wadsworth Emmons reaction pi conjugated terpyridine synthesis; luminescence pi conjugated linear star terpyridine.They researched the compound: 4-(p-Tolyl)-2,2:6,2-terpyridine( cas:89972-77-0 ).Electric Literature of C22H17N3. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:89972-77-0) here.
A set of rigid, π-conjugated linear mono- and bisterpyridines and star-shaped tristerpyridines [e.g. I (R = octadecyl) and 1,3,5-C6R13 (R1 = II)] were synthesized using Pd(0)-catalyzed coupling reactions and the Horner-Wadsworth-Emmons reaction. The terpyridyl ligands obtained feature strong emission in the blue range with high quantum yields in dilute solution and thin films.
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Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI