The Free Radical Addition of Phosphines to Unsaturated Compounds

Iron(0) and ruthenium(0) complexes with tridentate phosphonite ligands and their potential for ketene formation from methyl iodide, CO and a base

“…Instead the iodo complexes 22-29 were obtained. The iron-acetyl complexes (34)(35)(36)(37) proved to be much more acidic than the related ruthenium-acetyl complexes (30)(31)(32)(33). In all the deprotonation experiments, we were unable to observe any ketene-metal intermediate.…”

“…The AIBN catalysed free radical addition [35][36][37][38] of phenylphosphine or cyclohexylphosphine with either dimethyl-or diisopropylallylphosphonite afforded the triphosphine ligands I-IV in quantitative yields (Scheme 3).…”

Ionic Liquids Made with Dimethyl Carbonate: Solvents as well as Boosted Basic Catalysts for the Michael Reaction

“…For example, tertiary phosphines are prepared from toxic and dangerous PH 3 and a-olefins. [41] It should also be noted that the methylation of amines and phosphines with DMC has a few recent, scarcely described, precedents in the literature: the methylation of trimethylamine [17] and the preparation of CBILS.…”

Alkyltributylphosphonium chloride ionic liquids: synthesis, physicochemical properties and crystal structure

“…95%. The tributylphosphine is industrially prepared (Cytec) by free radical anti-Markovnikov addition of phosphine to 1-butene, 34 but there is a small fraction which proceeds in classic Markovnikov mode, 35 where phosphorus adds to the β-carbon, forming dibutyl(sec-butyl)phosphine (-17.88 50 ppm, Figure 4). Fig.…”