4795-31-7Relevant academic research and scientific papers
Neodymium tris-diarylphosphates: Systematic study of the structure-reactivity relationship in butadiene and isoprene polymerisation
Nifant'Ev, Ilya E.,Tavtorkin, Alexander N.,Korchagina, Sof'Ya A.,Gavrilenko, Inna F.,Glebova, Nataliya N.,Kostitsyna, Nataliya N.,Yakovlev, Vladimir A.,Bondarenko, Galina N.,Filatova, Marina P.
, p. 219 - 277 (2014/05/20)
The catalytic properties of neodymium tris-phosphates with various diarylphosphate ligands in the stereoregular 1,4-cis-polymerisation of butadiene and isoprene were studied. The considerable variability of the diaryl phosphate structure allowed for the systematic investigation of the dependence of the catalytic properties of neodymium tris-diarylphosphates on the electronic and steric properties of the ligand. Electron-withdrawing substituents (F, Cl, Br) in the aryl moiety increased the catalyst activity of tris-diarylphosphate. Neodymium aryl phosphates containing lipophilic bulky ligands provided the synthesis of polydienes with a monomodal molecular-weight distribution. The optimal catalytic properties demonstrated that the neodymium aryl phosphate prepared from bis(2,6-dimethyl-4-tert-butylphenyl)-phosphoric acid showed high activity and ensured a monomodal MWD of polydienes (Mw/Mn ～ 2 for polybutadiene and Mw/Mn ～ 3 for polyisoprene) in various conditions.
Catalysis of the hydrolysis of esters of phosphorus acids by n-decylammonium chloride/n-decylamine mixed micelles
Bakeeva,Kudryavtseva,Bel'skii,Fedorov,Ivanov
, p. 1900 - 1903 (2007/10/03)
The effect of n-decylammonium chloride/n-decylamine mixed micelles on the rate of hydrolysis of aryl esters of acids of four-coordinate phosphorus was studied spectrophotometrically. The shape of the concentration curves is characteristic of the micellar
CATALYTIC EFFECT OF SUBSTITUTED DIPHENYLPHOSPHORIC ACIDS ON THE FORMATION OF ESTERS
Zhil'tsov, N. P.,Semenyuk, G. V.,Korzhenevskaya, N. G.
, p. 825 - 828 (2007/10/02)
The catalytic effect of substituted diphenylphosphoric acids on the rate of the reaction of butyryl chloride with 1-butanol in toluene was investigated.It was shown that the effect of the nature of the substituent in the acid molecule has little effect on its catalytic activity.This indicates a bifunctional mechanism of catalysis in the reaction.
