Palladium(II) complexes of 2-, 3-, and 4-quinolinyl(diphenyl)phosphane and di-(3-quinolinyl)phenylphosphane: Synthesis, characterization, and catalytic screening

Phosphines and related C–P bonded compounds

“…5 Traditional halogen-metal exchange procedures involving butyllithium reagents with halo-arenes or -alkenes, followed by treatment with chlorophosphines, have formed the basis of routes to a range of new phosphines. Among new monophosphines prepared in this way are a range of sterically crowded o-alkyl-substituted aryl(alkyl)phosphines, 6 2-, 3and 4-quinolyl(diphenyl)phosphines, 7 the crowded biarylphosphine (4), 8 the phosphino-allene (5), 9 and the phosphinoferrocene (6). 10 Stereochemical assignments relating to phosphines of the Taniaphos series (7), also prepared by the above route, have been corrected, following comments from other workers.…”

“…Among new monophosphines prepared in this way are a range of sterically crowded o-alkyl-substituted aryl(alkyl)phosphines, 6 2-, 3and 4-quinolyl(diphenyl)phosphines, 7 the crowded biarylphosphine (4), 8 the phosphino-allene (5), 9 and the phosphinoferrocene (6). 10 Stereochemical assignments relating to phosphines of the Taniaphos series (7), also prepared by the above route, have been corrected, following comments from other workers. 11 Other new phosphines also prepared in this way include a series of mono-and diphosphino-anthracenes (8), 12 the unsymmetrical 2,2 0 -bis (phosphino)diphenylamine (9), 13 the p-phenylenediphosphines (10), 14 the diphosphine (11), (capable of quaternisation at nitrogen to give water-soluble a Biomedical Research Centre, Sheffield Hallam University, Sheffield, UK S1 1WB Organophosphorus Chem., 2010, 39, 1-48 | 1 c The Royal Society of Chemistry 2010 15 and the tetraphosphines (12) that act as rigid scaffolds which prevent interactions of metal complexes with oxide supports.…”