1148-79-4Relevant articles and documents
Isolation and X-Ray Crystal Structure of a Novel Dihydroterpyridine Dimer formed via an Anionic Cycloaddition
Newkome, George R.,Hager, David C.,Fronczek, Frank R.
, p. 858 - 859 (1981)
The identity of a novel dimer (2), isolated as a by-product from the reaction of 2-lithiopyridine with 2,2'-bipyridine, has been assigned on the basis of X-ray crystal structure analysis.
An improved, two-step synthesis of 2,2′:6′,2″-terpyridine
Jameson, Donald L.,Guise, Lisa E.
, p. 1999 - 2002 (1991)
The important tridentate ligand 2,2′:6′,2″-terpyridine has been synthesized in two steps in an overall yield of 47%. The reaction can be scaled up to provide multigram quantitites of the ligand.
A new approach to symmetric 2,2':6',2'-terpyridines
Adrian Jr., James C.,Hassib, Lamyaa,De Kimpe, Norbert,Keppens, Marian
, p. 2365 - 2370 (1998)
A novel four step process for the preparation of symmetric terpyridines is presented. The title compound, 2,2':6',2'-terpyridine (1a) and a substituted derivative, 5,5'-dimethyl-2,2':6',2'-terpyridine (1b) are prepared. Both 1a and 1b 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.
New Approaches to the Synthesis of 2,2′: 6′,2″-Terpyridine and Some of Its Derivatives
Zamalyutin,Bezdenezhnykh,Nichugovskiy,Flid
, p. 419 - 425 (2018)
A new two-step procedure has been developed for the synthesis of 2,2′: 6′,2″-terpyridine and 4′-methylsulfanyl-2,2′: 6′,2″-terpyridine in more than 70% yield on the basis of Potts’ condensation. Efficient methods have been proposed for purification of all condensation products.
Syntheses, crystal structures, luminescence and thermal properties of three lanthanide complexes with 2-bromine-5-methoxybenzoate and 2,2:6′,2″-terpyridine
Zhao, Qing-Qing,Ren, Ning,Zhang, Jian-Jun
, p. 1 - 5 (2018)
Three new mononuclear lanthanide complexes [Ln(2-Br-5-MOBA)3(terpy)(H2O)] (Ln = Gd (1), Tb (2), Er (3); 2-Br-5-MOBA = 2-bromine-5-methoxybenzoate; terpy = 2,2:6′,2″-terpyridine) have been successfully synthesized and characterized by single-crystal X-ray diffraction. The complexes 1–3 were isostructural and eight-coordinated, which is different from the binuclear structure of the previously reported complexes. The molecular structure of complexes 1–3 is very interesting: two adjacent mononuclear units are connected through hydrogen bonding giving rise to a pseudo binuclear structure. These pseudo binuclear units are further linked via O–H?Br hydrogen bonds and slightly offset π–π stacking interactions to from 1D and 2D supramolecular structures. The thermal decomposition mechanism of complexes 1–3 was studied by TG analysis and further authenticated by TG/DSC-FTIR techniques. The solid-state luminescent property of complex 2 was investigated at room temperature. The result indicates that Tb (III) complex appear to be promising candidate for the application as green luminescent material.
Complexing Equilibria and Redox Potentials of the Ag(II)/Ag(I) System in the Presence of 2,2':6',2''-Terpyridine in Water
Ignaczak, Maksymilian,Grzejdziak, Andrzej,Olejniczak, Barbara
, p. 515 - 528 (1989)
The conditional protonation constants (μ = 0.1) for 2,2':6',2''-terpyridine, log K1 = 4.93, log K2 = 3.69, were determined by the pH-metric method.The compositions of complexes of Ag2+ and Ag+ ions with 2,2':6',2''-terpyridine (tp) were studied and equilibria of the complex formation process were described.The values of conditional complex formation constants are as follows: for Ag(tp)2+: log β01 = 5.79, log β02 = 9.68, for Ag(tp)22+: log β02 = 25.31, while the conditional constant of the Ag(tp)NO3 precipitate formation is : KSO = 2.45*104.Using coulometric and chronovoltamperometric measurements, the redox systems being formed in the complex solutions of Ag(II) and Ag(I) were determined and described including their formal potentials. - Keywords: Chronovoltammetry; Formal potential; pH-metry; Redox systems with silver ions; Silver complexes
Studies on organometallic compounds. IX. Synthesis of bipyridine N-oxides and terpyridines by palladium catalyzed cross-coupling reaction of trimethylstannylpyridines with bromopyridines
Yamamoto, Yutaka,Tanaka, Takuo,Yagi, Masayoshi,Inamoto, Masayuki
, p. 189 - 194 (1996)
Reaction of trimethylstannylpyridines with bromopyridines in the presence of Pd(PPh3)4 directed toward a practical use was accomplished, giving all nine pyridinylpyridine N-oxides in satisfactory yields. Similarly, nicotelline and 2,2′:6′,2″-terpyridine were produced in good yields.
Synthesis, Characterization, and DFT Analysis of Bis-Terpyridyl-Based Molecular Cobalt Complexes
Aroua, Safwan,Todorova, Tanya K.,Hommes, Paul,Chamoreau, Lise-Marie,Reissig, Hans-Ulrich,Mougel, Victor,Fontecave, Marc
, p. 5930 - 5940 (2017)
Terpyridine ligands are widely used in chemistry and material sciences owing to their ability to form stable molecular complexes with a large variety of metal ions. In that context, variations of the substituents on the terpyridine ligand allow modulation of the material properties. Applying the Stille cross-coupling reaction, we prepared with good yields a new series of terpyridine ligands possessing quinoline-type moieties in ortho, meta, and para positions and dimethylamino substituents at central or distal positions. The corresponding cobalt(II) complexes were synthesized and fully characterized by elemental analysis, single-crystal X-ray crystallography, mass spectrometry, and UV-vis, 1H NMR, and Fourier transform infrared (FT-IR) spectroscopy as well as by cyclic voltammetry (CV). Density functional theory (DFT) calculations were performed to investigate the electronic structure of all the Co(II) bis-terpyridyl molecular complexes. In this work, we show that terpyridine ligand functionalization allows tuning the redox potentials of the Co(III)/Co(II), Co(II)/Co(I), and Co(I)/Co(I) (tpy)?- couples over a 1 V range.
A new and simple 'LEGO' system for the synthesis of 2,6-oligopyridines
Pabst, Gunther R.,Sauer, Juergen
, p. 6687 - 6690 (1998)
The condensation of α-arylglyoxals with carboxamidrazones 1 - 2 is the best method for the synthesis of aryl or hetaryl substituted 1,2,4-triazines 3 - 4. These 1,2,4-triazines can be easily transformed to pyridines by [4+2] cycloaddition with bicyclo[2.2.1]hepta-2,5-diene followed by [4+2] cycloreversions of nitrogen and cyclopentadiene. This reaction sequence offers a new, simple and general access to 2,6-oligopyridines 8 - 11.
Convenient one-pot procedures for the synthesis of 2,2′:6′, 2″-terpyridine
Cooke, Michael W.,Wang, Jianhua,Theobald, Isabelle,Hanan, Garry S.
, p. 1721 - 1726 (2006)
One-pot reactions to produce 2,2′:6′,2″-terpyridine (tpy) under mild conditions are described under both solventless and solvent-assisted conditions. Tpy can be obtained in 32% yield in a simple one-pot reaction, which can readily be scaled-up to give large quantities of tpy. These new approaches are superior to those previously described because of the fast and efficient synthesis and purification of tpy. Copyright Taylor & Francis Group, LLC.
