434319-11-6Relevant articles and documents
Mono- and dinuclear pincer nickel catalyzed activation and transformation of C-Cl, C-N, and C-O bonds
Yang, Xia,Wang, Zhong-Xia
, p. 5863 - 5873 (2014)
Condensation of 2-NH2C6H4P(Et)Ph (2) with pyrrole-2-carboxaldehyde generated 2-(C4H4N-2′-CH - N)C6H4P(Et)Ph (3). Treatment of 3 with NaH and followed by (DME)NiX2 (X = Cl, Br) afforded mononuclear pincer nickel complexes [Ni{2-(C4H3N-2′-CH - N)C6H4P(Et)Ph}X] (4a, X = Cl; 4b, X = Br). Reaction of [2-NH2C6H4P(Ph)]2(CH2)n (5a, n = 3; 5b, n = 4) with pyrrole-2-carboxaldehyde or 5-tert-butyl-1H-pyrrole-2-carbaldehyde formed [2-(C4H4N-2′-CH - N)C6H4P(Ph)]2(CH2)n (6a, n = 3; 6b, n = 4) and [2-(5′-tBuC4H3N-2′-CH - N)C6H4P(Ph)]2(CH2)4 (6c). Respective treatment of 6a-c with NaH followed by (DME)NiX2 (X = Cl, Br) gave the dinuclear nickel complexes [Ni{2-(5′-RC4H2N-2′-CH - N)C6H4P(Ph)}X]2(CH2)n (7a, R = H, X = Cl, n = 3; 7b, R = H, X = Cl, n = 4; 7c, R = H, X = Br, n = 4; 7d, R = tBu, X = Cl, n = 4). Catalysis of the complexes for the activation and transformation of C-Cl, C-N, and C-O bonds was evaluated. Complex 7c exhibited excellent catalytic activity in the cross-coupling of aryl chlorides or aryltrimethylammonium iodides with arylzinc reagents as well as of aryl sulfamates with aryl Grignard reagents. The dinuclear nickel complexes 7b-d showed higher catalytic activity than the mononuclear complexes in each type of reaction.
Synthesis of bis[palladium(II)] and bis[platinum(II)] complexes containing chiral, linear quadridentate ligands with a P2N2 donor set
Bennett, Justine,Rae, A. David,Salem, Geoffrey,Ward, Natalie C.,Waring, Paul,Wells, Kerri,Willis, Anthony C.
, p. 234 - 243 (2007/10/03)
A number of bis[palladium(II)] and bis[platinum(II)] complexes of the type [(MCl2)2(μ-quadridentate)] [where M = Pd(II) or Pt(II)] and [(PtClMe)2(μ-quadridentate)] have been prepared containing the linear quadridentate NPP
