New bis(diphenylphosphino)aniline derivatives: Synthesis and spectroscopic characterization

Abstract

Six new multidentate bis(diphenylphosphino)amine [R N(PPh

Synthesis of new aminophosphine complexes and their catalytic activities in C–C coupling reactions

“…The new aminophosphines 1a and 1b were prepared from the commercially available amines via the classical aminolysis reaction with diphenylphosphine chloride in dichloromethane (see Scheme 1) [19]. The reaction of Ph 2 PCl with 2-picolylamine and benzylamine yielded products with single resonances d 62.6 ppm for 1a and 60.2 ppm for 1b, respectively in their 31 P NMR spectra in high yield.…”

Synthesis and reactivity of N,N-bis(diphenylphosphino)dimethylaniline compounds

“…The bis(diphenylphosphino)dimethylanilines, (Ph 2 P) 2 N-C 6 H 3 (CH 3 ) 2 (1-4), were prepared from the commercially available starting materials, (CH 3 ) 2 C 6 H 3 -NH 2 and Ph 2 PCl by the aminolysis method in CH 2 Cl 2 (Scheme 1) according to a literature method [13].…”

Aminophosphine ligands: synthesis, coordination chemistry, and activity of their palladium(II) complexes in Heck and Suzuki cross-coupling reactions

“…The bis(phosphino)amine ligands 1 and 2 have been prepared by aminolysis of Ph 2 PCl with the commercially available aromatic amines 4-aminodiphenylamine and 2-aminofluorene, respectively, in the presence of Et 3 N (Scheme 1). Since the ligands are unstable and rapidly decompose upon exposure to air or moisture, triethylamine hydrogen chloride cannot be separated from them by our previous method [21], which involves washing the solid product with water. Moreover, triethylamine hydrogen chloride is soluble in dichloromethane, rendering this solvent unsuitable for the present case.…”