A trigonal and hindered tertiary phosphine ligand rendered anionic by a niobate anchor: Formation of zwitterionic M(i) (M = Cu, Ag, Au, Rh) complexes

2011 ◽  
Vol 2 (11) ◽  
pp. 2166 ◽  
Author(s):  
Sidney E. Creutz ◽  
Ivo Krummenacher ◽  
Christopher R. Clough ◽  
Christopher C. Cummins
Keyword(s):  
Phosphine Ligand ◽  
Tertiary Phosphine

Solution Thermochemical Study of a Fluorous Tertiary Phosphine Ligand in Rhodium and Ruthenium Systems

1998 ◽  
Vol 17 (3) ◽  
pp. 452-456 ◽  
Author(s):  
Chunbang Li ◽  
Steven P. Nolan ◽  
István T. Horváth
Keyword(s):  
Phosphine Ligand ◽  
Thermochemical Study ◽  
Tertiary Phosphine

An Approach to Nonsymmetric Bis(tertiary phosphine oxides) Comprising Heterocyclic Fragments via the Pd-Catalyzed Phosphorylation

Synlett ◽  
2020 ◽  
Vol 31 (18) ◽  
pp. 1833-1837
Author(s):  
Gladis G. Zakirova ◽  
Dmitrii Yu. Mladentsev ◽  
Nataliya N. Borisova
Keyword(s):  
Phosphine Oxide ◽  
Phosphine Ligand ◽  
Nonpolar Solvent ◽  
Phosphine Oxides ◽  
Purification Step ◽  
Tertiary Phosphine ◽  
Phosphorylation Reaction ◽  
Double Coupling

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.

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