Aminophosphines derived from morpholine and N-methylpiperazine: Synthesis, oxidation reactions and transition metal complexes

作者：Balakrishna Maravanji S^*; Suresh D; George Paulose P; Mague Joel T

来源：Polyhedron, 2006, 25(16): 3215-3221.

DOI：10.1016/j.poly.2006.05.041

• aminophosphines
• insertion reaction
• sulfur and selenium derivatives
• palladium and platinum complexes
• ruthenium(II)

The synthesis, derivatization and coordination behavior of N-diphenylphosphinomorpholine (1) and N-diphenylphosphinopiperazine (2) is described. Ligands 1 and 2 react with elemental sulfur or selenium to give the corresponding chalcogenides in good yield. Reaction of 1 with paraformaldehyde leads to the insertion of methylene into P-N bond to give phosphine oxide, Ph2P(O)CH2NC4H8O in quantitative yield. Treatment of 2 with [Pd(COD)Cl-2] produces both the mononuclear [PdCl2{(Ph2PNC4H8O)-kappa P}(2)] and the chloro-bridged dinuclear complex, [(OC4H8NPh2P)Pd-(mu-Cl)Cl](2) whereas the similar reaction of 2 with [Pt(COD)Cl-2] affords only the mononuclear complex [PtCl2{(Ph2PNC4H8O)-kappa P}(2)], Interestingly, ligand 2 reacts with Mo(0), W(0), Ru(II), Pd(II), Pt(II) and Au(I) derivatives to furnish exclusively mononuclear complexes. The molecular structures of Ru(II) and Pd(II) dimer have been confirmed by X-ray studies.

• 出版日期2006-11-13