1373501-47-3Relevant academic research and scientific papers
A convenient method for synthesis of terpyridines: Via a cooperative vinylogous anomeric based oxidation
Karimi, Fatemeh,Yarie, Meysam,Zolfigol, Mohammad Ali
, p. 25828 - 25835 (2020)
The presented study is the first report of the synthesis of terpyridines in the presence of a nanomagnetic catalyst instead of harmful reagents. Herein, Fe3O4&at;O2PO2(CH2)2NH3+CF3CO2- as a retrievable nanocatalyst with magnetic properties was applied for the multi-component reaction between acetylpyridine derivatives (2 or 3 or 4-isomer), aryl aldehydes and ammonium acetate under conventional heating conditions in the absence of any solvent. The derived terpyridines were obtained with acceptable yields and brief reaction times via a cooperative vinylogous anomeric based oxidation route. Fe3O4&at;O2PO2(CH2)2NH3+CF3CO2- showed a high capability for recovery and reuse in the mentioned reaction.
One-dimensional copper(II) coordination polymers built on 4′-substituted 4,2′:6′,4- and 3,2′:6′,3-terpyridines: Syntheses, structures and catalytic properties
Li, Li,Zhang, Yuan Zhuo,Yang, Chengxiong,Liu,Golen, James A.,Zhang, Guoqi
, p. 115 - 122 (2016)
Divergent ligands containing either 4,2′:6′,4- or 3,2′:6′,3-terpyridine domains (1-4) with various 4′-substituents are synthesized. The new ligand 4 was fully characterized by standard spectroscopic and mass spectrometric technique. All ligands were then
Cobalt(ii) coordination polymers with 4′-substituted 4,2′:6′,4′′- and 3,2′:6′,3′′- terpyridines: Engineering a switch from planar to undulating chains and sheets
Constable, Edwin C.,Housecroft, Catherine E.,Neuburger, Markus,Vujovic, Srboljub,Zampese, Jennifer A.,Zhang, Guoqi
, p. 3554 - 3563 (2012)
Two new ligands 4′-(1H-imidazol-4-yl)-4,2′:6′, 4′′-terpyridine (3) and 4′-(4-dimethylaminophenyl)-3,2′: 6′,3′′-terpyridine (4) are described. Structure determination of 3·CHCl3 reveals the assembly of hydrogen-bonded chains of molecules of 3; the preference for NHimidazole...Ntpy over NHimidazole...Nimidazole hydrogen bonds is consistent with the relative basicities of the heterocyclic rings. Reactions of Co(NCS)2 with 4′-phenyl-4,2′:6′,4′′- terpyridine (1), 4′-(4-ethynylphenyl)-4,2′:6′,4′′- terpyridine (2) or 3, produce two-dimensional networks. In each, the Co 2+ ion is in an octahedral trans-{Co(Ntpy) 4(NCS)2} environment. [{2Co(1)2(NCS) 2·5H2O}n] and [{Co(3) 2(SCN)2·2MeOH}n] exhibit (4,4) nets. In [{Co(2)2(NCS)2·0.67C2H 4Cl2·MeOH·H2O}n], a (6,3) net is present. In all three coordination networks, there is substantial twisting of the 4,2′:6′,4′′-terpyridine backbone and as a consequence, the dominant packing interactions are not the face-to-face π-stacking of tpy domains that are ubiquitous in many solid-state structures containing metal-bound tpy domains. As a preliminary investigation of the effects of altering the directionality of the donor set in the terpyridine domain, Co(SCN)2 was reacted with ligand 4, and the one-dimensional coordination polymer [{Co(4)(MeOH)2(NCS)2}n] was isolated. Ligand 4 adopts a trans,trans-arrangement and the zig-zag chains are undulating. The buckled sheets that result from the intermeshing of the chains contrast with the planar sheets observed in [{Cd(5)(OH2) 2(ONO2)(O2NO)·H2O} n] (5 = 4′-(4-dimethylaminophenyl)-4,2′:6′, 4′′-terpyridine). The observed packing interactions suggest that the change from planar to undulating chains and sheets on going from 5 to 4 is a consequence of optimizing face-to-face π-stacking interactions.
