66391-31-9

Upstream product

• 186581-53-3 diazomethane 
• 2566-26-9 2,4-dinitrophenyl dihydrogen phosphate 
• 51-28-5 2,4-Dinitrophenol 
• 813-77-4 Dimethyl chlorophosphate 

Downstream Products

• 29267-37-6 lithium 2,4-dinitrophenyl methyl phosphate 
• 80583-27-3 Phosphoric acid 2,4-dinitro-phenyl ester methyl ester; compound with ethyl-diisopropyl-amine 

Relevant academic research and scientific papers

Kinetics and adsorption calculations: insights into the MgO-catalyzed detoxification of simulants of organophosphorus biocides

We report the targeted decomposition of the organophosphate methyl paraoxon by means of its transesterification with 1-propanol catalyzed by magnesium oxide. Catalyst characterization by energy dispersive X-ray fluorescence (EDXRF), nitrogen adsorption/desorption measurements (BET and BJH methods), and temperature programmed desorption of CO2(CO2-TPD) showed that the employed MgO presents properties favorable for the methyl paraoxon adsorption and transesterification to occur. A thorough kinetic investigation showed that rate enhancements up to 3 × 106-fold can be achieved in comparison with the spontaneous propanolysis of the substrate, and that the material can be used in additional cycles without loss of catalytic activity, with the catalyst recovery achieved through a simple washing procedure. Energies for adsorption of 1-propanol and methyl paraoxon onto a MgO model surface were obtained by density functional theory calculations, which showed that the latter displays a stronger affinity for the catalyst surface, and that the reaction should proceed with methyl paraoxon and 1-propanol molecules juxtapositioned at adjacent Mg2+sites, with nucleophilic and electrophilic centersca.2.4 ? away from each other. Additionally, MgO also promoted rate enhancements up to 5 × 104-fold in the propanolysis of a further range of representative phosphate triesters, and in most of the cases the final transesterified products are trialkyl phosphates structurally related to a family of flame-retardants. The results thus provide insights into the development of novel systems for the targeted conversion of organophosphorus compounds into value-added products by employing simple, highly efficient, and low-cost metal oxide catalysts.

Mononuclear Co(III)-complex promoted phosphate diester hydrolysis: Dependence of reactivity on the leaving group

The TrpnCo(III)(OH)(OH2)-promoted hydrolysis of a range of methyl aryl phosphate diesters was investigated at 37°C and I = 0.1 M (NaClO4). The pH-rate profile confirms that the aqua-hydroxy form of the complex is the only kinetically

Effective Charge Distribution for Attack of Phenoxide Ion on Aryl Methyl Phosphate Monoanion: Studies Related to the Action of Ribonuclease

The reaction of phenoxide ion with aryl methyl phosphate monoanions and aryl diethyl phosphates obeys second-order kinetics in aqueous solution at 39 deg C and 1 M ionic strength.The second-order rate constants (M-1s-1) for these reaction obey the following Broensted equations: log k2 = -0.51pKlg + 0.72 (r = 0.970) (aryl diethyl phosphate) log k2 = -0.64pKlg - 2.53 (r = 0.898) (aryl methyl phosphate monoanion) The monoanion is some 104-fold less reactive toward attack by phenolate ion than is the diethyl ester with 4-nitrophenol leaving group, consistent in part with the operation of an electrostatic effect.The similarity between the Broensted exponents in both reactions indicates that the effective charge change on the leaving oxygen from ground state to transition state is similar in both cases; this indicates that the oxyanion in the monoanion case does not assist leaving group expulsion.The date are consistent with little coupling between proton abstraction from the 2'-hydroxyl group and the leaving group expulsion in the ribonuclease reaction.

The Monomeric Metaphosphate Anion in Negative-Ion Chemical-Ionization Mass Spectra of Phosphotriesters

The monomeric metaphosphate anion, PO3-, was first proposed in 1955 as an intermediate in hyrolysis of phosphomonoesters in aqueous solution.But almost a quarter of a century elapsed before its first direct observation, in the negative-ion chem

Reactions of the Monomeric Metaphosphate Anion Generated from Different Sources

The reactions of 0.2 M acetonitrile solutions of 2,4-dinitrophenyl dihydrogen phosphate and erythro-1-phenyl-1,2-dibromopropylphosphonic acid containing 2 molar equiv of diisopropylethylamine have been studied at 25 deg C by means of 31P NMR spectrometry