73892-41-8Relevant academic research and scientific papers
Preparation and characterization of palladium and platinum complexes bearing 1,8-bis[(diphenylphosphino)methyl]naphthalene
Yamamoto,Fukui,Matsubara,Takeshima,Miyauchi,Tanase,Yamamoto
, p. 1773 - 1781 (2001)
Reaction of MCl2(cod) (M = Pd, Pt) with 1,8-bis[(diphenylphosphino)methyl]naphthalene (1,8-dpmn) gave MCl2(1,8-dpmn) 1 (M = Pd), 2 (M = Pt), as confimed by X-ray analyses. Complex 1 reacted with xylyl isocyanide a (XylNC) in the presence of NaPF6 to give [Pd(1,8-dpmn)(XylNC)2](PF6)2 3a. Reactions of dinuclear complexes [M2(RNC)6](PF6)2 (4: M = Pd, 5: M = Pt; R = Xyl (a) or 2,4,6-Me3C6H2 (b) (Mes)) with one or two equiv. of 1,8-dpmn gave [M2(1,8-dpmn)(RNC)4](PF6)2 6 (M = Pd) and 7 (M = Pt), or [M2(1,8-dpmn)2(RNC)2](PF6) 2 8 (M = Pd) and 9 (M = Pt). The structures of 6b, 7b and 8b were confirmed by X-ray analyses. Reaction of [Pd2Cl2(XylNC)4] with two equiv. of 1,8-dpmn in the presence of NaPF6 gave 8a, whereas the reaction in the presence of NH4PF6 produced 10a together with 7a. It was confirmed by an X-ray analysis of 10a that the crystal lattice is constructed by two types of cations (3a and two 2,2,6,6-tetramethyl-4-piperidonium) and four PF6 anions. Photochemical reaction of 6a or 8a in CH2Cl2 led to cleavage of the Pd-Pd bond, giving [PdCl(XylNC)3](PF6) and [PdCl(1,8-dpmn)(XylNC)](PF6).
1,8-dimethylnaphthalene-bridged diphosphine ligands: Synthesis and structural comparison of their palladium complexes
Bellabarba, Ronan M.,Hammond, Colin,Forman, Grant S.,Tooze, Robert P.,Slawin, Alexandra M.Z.
, p. 2444 - 2449 (2007/10/03)
The synthesis of a new series of ligands with a 1,8-dimethylnaphthalene backbone is reported, 1,8-(R2PCH2)2C 10H6, where R = tBu 1 (dbpn), iPr 2 (dippn), Cy 3 (dchpn) and Ph 4 (d
Synthesis and characterization of ruthenium complexes of 1,8-bis(diphenylphosphinomethyl)naphthalene (BDNA) and their catalytic hydrogenation reactions to α,β-unsaturated aldehydes
Li, Rui-Xiang,Wong, Ning-Bew,Li, Xian-Jun,Mak, Thomas C.W.,Yang, Qing-Chuan,Tin, Kam-Chung
, p. 223 - 229 (2007/10/03)
A new ligand BDNA [1,8-bis(diphenylphosphinomethyl)naphthalene] and three ruthenium complexes containing the new ligand, Ru2Cl4(BDNA)2 1, RuHCl(CO)(PPh3)(BDNA) 2, and RuH2(CO)(PPh3)(BDNA) 3, have been synthesized. Their compositions and structures were characterized by 31P{1H}-NMR, 1H-NMR, and elemental analysis. Molecular structure of 3 was also confirmed by single-crystal X-ray diffraction. The crystal belonged to the triclinic crystal system, P1 space group, a=10.7450(7), b=12.7100(7), c=18.1390(13) A, α=89.558(6), β=83.117(2), γ=80.859(5)°, V=2428.0(3) A3, and Z=2. The hydrogenation results of citral and cinnamaldehyde revealed that complex 2 had good catalytic activity and complex 3 had the high selectivity for the hydrogenation of C=O bond in α,β-unsaturated aldehydes to form the corresponding allylic alcohols. In the presence of complex 3, very high selectivities of 99.5 and 95.1% were obtained for the hydrogenation of the carbonyl group in citral and cinnamaldehyde, respectively.
