890660-91-0

Upstream product

• 108-67-8 1,3,5-trimethyl-benzene 
• 1120-87-2 4-bromopyridin 
• 182863-41-8 1,3,5-triethynyl-2,4,6-trimethylbenzene 
• 216143-02-1 1,3,5-trimethyl-2,4,6-tri(2-trimethylsilylethynyl)benzene 
• 19025-36-6 2,4,6-triiodomesitylene 

Downstream Products

• 1185907-11-2 [Cu(C₁₂H₆N₂(C₆H₃(CH₃)2)2)(4,4'-bipyridine)(PF₆)]*(1,2-dichlorobenzene) 

Relevant academic research and scientific papers

Modular syntheses of star-shaped pyridine, bipyridine, and terpyridine derivatives by employing sonogashira reactions

A simple and flexible synthesis for a series of star-shaped pyridine, bipyridine, and terpyridine derivatives is reported by using a modular approach that combines the use of a ligand, spacer, and core unit. A fairly efficient method to prepare 4′-nonafloxy-functionalized terpyridine derivatives is described. The building blocks that contain the functionalized pyridine, bipyridine, or terpyridine derivatives were linked to different C3-symmetrical core units. In most cases, Sonogashira reactions were employed in the crucial final steps of the synthesis. A star-shaped dodecafluorinated compound was also prepared in a straightforward fashion. A simple procedure for the preparation of partially silylated 1,3,5-triethynylbenzene derivatives is presented, which provides an approach to C2-symmetrical star-shaped compounds that have only one terpyridine and two terphenyl units as "dummy" ligands. The absorption and emission spectra of the fully conjugated C3-symmetrical pyridine derivatives were systematically investigated, and fairly large Stokes shifts were observed.