64741-33-9Relevant articles and documents
An Approach to Nonsymmetric Bis(tertiary phosphine oxides) Comprising Heterocyclic Fragments via the Pd-Catalyzed Phosphorylation
Zakirova, Gladis G.,Mladentsev, Dmitrii Yu.,Borisova, Nataliya N.
supporting information, p. 1833 - 1837 (2020/09/21)
Nonsymmetric tertiary phosphine oxides with different five- and six-membered heterocyclic fragments such as pyridine, 2,2′-bipyridine, 1,10-phenantroline, quinoline, imidazole, and thiazole were synthesized in good yields via the successive introduction of phosphine oxide groups into the initial dihalogenated heterocycles by means of Pd-catalyzed phosphorylation reaction. The synthesis of pyridine-type compounds is hindered by competing double coupling, while for five-membered heterocycles the principal difficulty is the dehalogenation. Both side processes were successfully suppressed by the use of an excess of a dihalide (which can be easily recovered during the product purification step), proper phosphine ligand for palladium, and nonpolar solvent such as toluene.
A NEW FAMILY OF AROMATIC POLYIMINE CHELATES SUBSTITUTED WITH TWO DIPHENYLPHOSPHINES
Ziessel, Raymond
, p. 463 - 466 (2007/10/02)
Reaction of lithium diphenylphosphide with vicinal nitrogen disubstituted polyimines such as 1,8-naphtyridine, 4'-phenyl-2,2',6',2''-terpyridine, 2,2'-bipyridine or 1,10-phenanthroline produces in high yield a new series of heterofunctional ligands.