13274-83-4Relevant academic research and scientific papers
Protolytic properties and reactivity of aminomethylated calix[4]resorcarenes in reactions with esters of phosphorus acids
Ryzhkina,Kudryavtseva,Mustafina,Morozova,Kazakova,Enikeev,Konovalov
, p. 453 - 458 (1999)
The acid-base properties and the kinetics of reactions of aminomethylated calix[4]resorcarenes (AMC) with p-nitrophenyl esters of phosphorus acids in aqueous solutions of propan-2-ol (80 vol.% PriOH) were studied by potentiometry, UV spectrophotometry, and 31P NMR spectroscopy. The effect of the length of the hydrocarbon radical and substituents at the nitrogen atom on the protolytic properties and reactivity of AMC was studied. The reactions studied occur in two stages. At the first stage, phosphorylated AMC are formed, which are hydrolyzed to the corresponding acids at the second stage.
Aggregation and catalytic activity of 2-hydroxybenzylated polyethyleneimines in water-organic solutions
Gaynanova,Yurina,Lukashenko,Zhil'Tsova,Zakharova,Kudryavtseva,Konovalov
experimental part, p. 1336 - 1342 (2011/04/16)
The aggregation of 2-hydroxybenzylated derivatives of polyethyleneimine in a water-DMF medium in the absence and in the presence of cationic surfactants was studied. The catalytic activity of modified polyethyleneimines in hydrolysis of phosphorus acid esters depends on the pH of the medium and increases with the formation of polymer-colloidal complexes. The polymer-colloidal complexes based on surfactants with two hydroxyethyl substituents in the head group have the maximum catalytic activity (increase in the reaction rate by up to three orders of magnitude).
Effect of structural preorganization on the reactivity of carbazoylmethyl derivatives of pyrogallol and calix[4]pyrogallol
Pashirova,Leonova,Podyachev,Sudakova,Zakharova,Kudryavtseva,Konovalov
, p. 2394 - 2399 (2008/12/23)
The aggregation behavior of carbazoylmethyl derivatives of pyrogallol and calix[4]pyrogallol was studied by conductometry and dynamic light scattering in water-DMF media. The formation of mixed nanoaggregates in the presence of cationic surfactants was re
Reaction of phosphoric (phosphonic) acids amides with chloromethyliso(thio) cyanatophosphonates(-phosphinates). Synthesis of 1,3,4-oxaza(thiaza)phospholines
Khailova,Shaimardanova,Pudovik,Aznacheev,Pudovik
, p. 1610 - 1614 (2007/10/03)
Addition of phosphoric (phosphonic) acids amides to chloromethyliso(thio) cyanatophosphonates (-phosphinates) gave rise to diphosphorylated ureas or thioureas that under effect of bases underwent cyclization into 1,3,4-oxaza(thiaza)phospholines. 2005 Plei
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
