Fluoride catalyzed P–aryl-coupling—a mild approach to functionalized arylphosphines
作者:Andreas Reis、Daniel Dehe、Saeid Farsadpour、Isabel Munstein、Yu Sun、Werner R. Thiel
DOI:10.1039/c1nj20448c
日期:——
Functionalized triaryl- and diarylalkylphosphines are accessible in high yields following a mild fluoride catalyzed phosphorousâcarbon coupling protocol starting from fluoroarenes and silylated phosphines. The reaction requires a minimum of solvent and can be applied to the synthesis of several functionalized phosphines on a kilogram scale without problems. In contrast to the phosphine synthesis in a superbasic medium, there is no salt formation during the reaction which simplifies the work-up process.
Synthesis of alkyl- and aryldiphenylphosphines via electrogenerated magnesium chloride diphenylphosphanide
作者:Malek Nechab、Erwan Le Gall、Michel Troupel、Jean-Yves Nédélec
DOI:10.1016/j.jorganchem.2006.01.001
日期:2006.4
allowing the formation of alkyldiphenylphosphines and aryldiphenylphosphines in good yield is described. It relies on the electrochemical preparation of magnesium chloride diphenylphosphanide and its subsequent coupling with either alkylhalides or aryl fluorides.
The palladium catalyzed phosphination of functionalized aryl bromides, triflates, and chlorides with triphenylphosphine to yield aryldiphenylphosphines was catalyzed by thermally stable palladium catalysts supported on charcoal and aluminia. The addition of NaI promoted both the rates and yields in the phosphination with Pd/C.
Nickel-catalyzed reductive coupling of chlorodiphenylphosphine with aryl bromides into functionalized triarylphosphines
作者:Erwan Le Gall、Michel Troupel、Jean-Yves Nédélec
DOI:10.1016/s0040-4020(03)01180-3
日期:2003.9
Functionalized triarylphosphines are obtained with good yields in a one-step reaction of an equimolar mixture of chlorodiphenylphosphine and an aromatic bromide in NMP or DMF at 110°C in the presence of zinc dust and a catalytic amount of NiBr2(bpy). A possible catalytic pathway is discussed.
Synthesis of Symmetrical and Unsymmetrical Functionalized Arylphosphines from Chlorophosphines and Organozinc Reagents
作者:Erwan Le Gall、Karima Aïssi、Isabelle Lachaise、Michel Troupel
DOI:10.1055/s-2006-939056
日期:——
the formation of symmetrical arylphosphines is described. It relies on the use of preformed functionalized aromatic organozincreagents to perform arylations of chlorophosphines. Some preliminary results concerning the synthesis of unsymmetrical diarylphenylphosphines through sequential coupling of organozinc species with dichlorophenylphosphine are also reported.