100366-66-3Relevant articles and documents
The Preparation and Co-ordination Chemistry of 2,2':6',2"-Terpyridine Macrocycles. Part 5. Unsubstituted Fifteen-membered-ring Macrocycles containing 2,2':6',2"-Terpyridine
Constable, Edwin C.,Holmes, Jeremy M.,McQueen, Roderick C. S.
, p. 5 - 8 (1987)
The preparation of a simple unsubstituted quinquedentate macrocycle incorporating a 2,2':6',2"-terpyridine moiety by a transient template reaction is described.The cobalt(II), nickel(II), copper(II), and zinc(II) complexes of the ligand are described, as is the oxidation-reduction chemistry of these compounds.E.s.r. studies indicate that pentagonal-bipyramidal complexes, with solvent molecules occupying the axial sites, are formed.
Synthesis, Structure, and Catalysis of Palladium Complexes Bearing a Group 13 Metalloligand: Remarkable Effect of an Aluminum-Metalloligand in Hydrosilylation of CO2
Takaya, Jun,Iwasawa, Nobuharu
, p. 6074 - 6077 (2017)
Efficient synthesis and catalysis of a series of palladium complexes having a group 13 metalloligand (Al, Ga, In) are reported utilizing 6,6-bis(phosphino)terpyridine as a new scaffold for Pd-E bonds (E = Al, Ga, In). Systematic investigation revealed unique characteristics of the Al-metalloligand in both structure and reactivity, which exhibited the highest catalytic activity for hydrosilylation of CO2 ever reported (TOF = 19 300 h-1). This study demonstrated fine-tuning of catalyst activity by the precisely designed metalloligand is a promising approach for new catalyst development in synthetic organometallic chemistry.
Synthesis of Halogenated Terpyridines and Incorporation of the Terpyridine Nucleus into a Polyetheral Macrocycle
Newkome, George R.,Hager, David C.,Kiefer, Garry E.
, p. 850 - 853 (1986)
Two synthetic approaches to haloterpyridines are herein described.The first method involved direct halogenation of terpyridine N-oxides with POCl3 to generate a mixture of polyhalogenated terpyridines.A more efficient approach to 6,6''-dibromo-2,2':6',2''-terpyridine utilized the Kroehnke synthesis to form the terpyridine moiety from appropriately halosubstituted precursors.Direct nucleophilic substitution on terpyridine was found to give low yields of macrocyclic products; however, if 1,5-bis(6-bromo-2-pyridyl)-1,5-dioxopentane was employed, macrocyclization afforded improved yields of the desired terpyridines.
Electrochemical coupling of mono and dihalopyridines catalyzed by nickel complex in undivided cell
Oliveira, Jadson L.,Silva, Maria J.,Florêncio, Tupolevck,Urgin, Karne,Sengmany, Stéphane,Léonel, Eric,Nédélec, Jean-Yves,Navarro, Marcelo
experimental part, p. 2383 - 2390 (2012/04/17)
One step nickel-catalyzed electroreductive homocoupling among 2-bromopicolines and 2-bromopyridine has been investigated by our group in an undivided cell and using zinc or iron as sacrificial anode. In this work, it was developed mono and dihalopyridines coupling to obtain possible products from heterocoupling. A series of reactions were carried out in order to develop a synthetic method for the preparation of unsymmetrical 2,2′-bipyridines and 2,2′:6′,2″-terpyridines. Statistical yields (50%) were observed for 2-bromopyridines/2-bromo-6-methylpyridine heterocoupling. In a preliminary study devoted to terpyridines preparation, good results were obtained for 2,6-dihalopyridines homocoupling, affording 2,6-dichloro-2, 2′-bipyridine (46%) and 2,6-dibromo-2,2′-bipyridine (56%), at controlled reaction time. At major reaction time, it was observed that the direct electroreduction of the 2,6′-dihalo-2,2′-bipyridines intermediates and 2,6″-dihalo-2,2′:6′,2″-terpyridines products on the cathode surface. A reasonable isolated product yield of 6,6″-dimethyl-2,2′:6′,2″-terpyridine (10%) was only observed in the reaction between 2,6-dichloropyridine and 2-bromo-6- methylpyridine (1:2).
Synthesis of some 2,2′:6′,2″-terpyridines disubstituted in positions 6 and 6″ with head-to-tail oriented amino acids and dipeptides: A simple entry to a reversible inducer of folding in amino acid sequences
Annunziata, Rita,Benaglia, Maurizio,Puglisi, Alessandra,Raimondi, Laura,Cozzi, Franco
body text, p. 3976 - 3983 (2009/04/10)
The 2,2′:6′,2″-terpyridine scaffold has been identified as a conformationally discrete structural element potentially capable of inducing reversible folding in substituents, attached through suitable spacers to its 6,6″-positions, by metal complexation/de
A novel one-pot synthesis of 6,6''-dibromo-2,2': 6'2''-terpyridine
Uchida,Okabe,Kobayashi,Oae
, p. 939 - 940 (2007/10/02)
Dibromo-2,2': 6'2''-terpyridine was obtained in a moderate yield by lithiation of four molar amounts of 2,6-dibromopyridine with butyllithium followed by treatment with phosphorus trichloride in diethyl ether.
