514205-41-5Relevant academic research and scientific papers
C-Br versus C-H bond activation in palladium (II) cyclopalladated compounds. Crystal and molecular structure of [Pd{C6H4C(H)=NCy}(MeCOCHCOMe)]
Vila, José M.,Pereira, Teresa,Ortigueira, Juan M.,Amoedo, Adriana,Gra?a, María,Alberdi, Gemma,López-Torres, Margarita,Fernández, Alberto
, p. 239 - 248 (2002)
Treatment of N-(2-bromobenzylidene)cyclohexylamine, 2-BrC6H4C(H)=NCy (a), with tris(dibenzylideneacetone) palladium(0) in refluxing benzene gave the cyclometallated compound [Pd{C6H4C(H)=NCy}(Br)]2 (1). Treatment of 1 with thallium acetylacetonate gave the mononuclear cyclometallated compound [Pd{C6H4C(H)=NCy}(MeCOCHCOMe)] (2). Reaction of a with palladium(II) acetate in refluxing acetic acid gave the dinuclear Pd(II) compound [Pd{2-BrC6H3C(H)= NCy}(O2CMe)]2 (3). Treatment of 3 with aqueous sodium chloride gave the dimer complex [Pd{2- BrC6H3C(H)=NCy}(Cl)]2 (4). Reaction of 4 with tertiary phosphines gave the cyclometallated complexes [Pd{2-BrC6H3C(H)=NCy}(L)] (5: L = PPh3; 6: L = PEtPh2; 7: L = PMePh2), with the phosphine ligand trans to the imine nitrogen atom. Treatment of 2-Br=4,5- tris(dibenzylideneacetone)palladium(0) gave [Pd{4,5-(MeO)2C6H2C(H)=NCH2 CH2NMe2}(X)] (8: X = Cl; 16: X = Br, respectively) and with the ligand as [C, N, N] terdentate. Treatment of 8 with tertiary phosphines gave [Pd{4,5-(MeO)2C6H2 C(H)=NCH2CH2NMe2}(Cl)(L)] (9: L = PPh3; 10: L = PEtPh2; 11: L = PMePh2). Reaction of 1,4-{2-Br-4,5-(MeO)2C6H2C(H)-N} 2C6H4 (c), with PdCl2, Li2[PdCl4] or K2[PdCl4] gave the tetranuclear compound [1,4-{Pd[4,5-(MeO)2C6 H2C(H)=N](Cl)}2C6H4] 2 (12), which when treated with tertiary phosphines gave the dinuclear species 13-15. The molecular structure of 2 has been determined by X-ray crystallography.
