777069-46-2Relevant academic research and scientific papers
Syntheses of a 2,6-bis-(methylphospholyl)pyridine ligand and its cationic Pd(II) and Ni(II) complexes - Application in the palladium-catalyzed synthesis of arylboronic esters
Melaimi, Mohand,Thoumazet, Claire,Ricard, Louis,Le Floch, Pascal
, p. 2988 - 2994 (2007/10/03)
2,6-Bis(2,5-diphenylphospholyl-1-methyl)pyridine (2) was prepared from the reaction of 2,5-diphenylphospholide anion with 2,6-bis(chloromethyl)pyridine. The X-ray crystal structure of 2 was recorded. Reaction of 2 with [Pd(COD)Cl2] in the presence of AgBF4 yields the cationic complex [Pd(2)Cl][BF4] (3). The analogous Ni complex [Ni(2)Br][BF4] (4) was prepared in a similar way by reacting ligand 2 with [NiBr2(DME)] in the presence of AgBF4 and its formulation was confirmed by an X-ray crystal structure study. Complex 3 efficiently catalyzes the coupling between pinacolborane and iodo and bromoarenes with good TON (up to 1 × 105 with iodo derivatives and 8.9 × 1 03 with bromo derivatives).
