Magnesium phosphate cement based porous materials (MPCPM) were prepared by means of a chemical foaming process using zinc powders as foaming agent. The influence of the zinc content, W/S ratio and particle size of ammonium dihydrogen phosphate (ADP) on the viscosity, temperature evolution, compr...
Abstract The effects of four different magnesium salts on the cutaneous barrier recovery rate after barrier disruption were evaluated. We spread an aqueous solution of each salt on the flank skin of hairless mice, occluded the area with a plastic membrane for 20min, and then left the skin surfac...
In the present study, single crystals of γ-glycine possessing excellent non-linear optical properties were successfully grown at room temperature in the presence of magnesium chloride (MgCl 2 ) for the first time by using the slow solvent evaporation method. The second harmonic conversi...
A novel mesoporous magnesium-based cement (MBC) was fabricated by using the mixed powders of magnesium oxide, sodium dihydrogen phosphate, and mesoporous magnesium silicate (m-MS). The results indicate that the setting time and water absorption of the MBC increased as a function of increasing m-...
The deposition of magnesium (Mg)‐rich dust from magnesite mining activities has resulted in serious land degradation. However, the main factors limiting plant growth in Mg‐contaminated soils are unclear. Moreover, little information is available on the remediation of Mg‐contaminated soils. In...
The effects of anions in saline solutions on the corrosion behaviour of magnesium alloy AZ31 were investigated using hydrogen evolution, pH and potentiodynamic measurements. The results demonstrated that adding bicarbonate and sulphate ions to saline solution accelerated the corrosion, whereas h...
In vitro degradation is an important approach to screening appropriate biomedical magnesium (Mg) alloys at low cost. However, corrosion products deposited on Mg alloys exert a critical impact on corrosion resistance. There are no acceptable criteria on the evaluation on degradation rate of Mg al...
The stereoselective pharmacokinetics of selenomethionine enantiomers in rats has been studied to evaluate the chiral inversion of d-selenomethionine to the l-enantiomer. After bolus intravenous administration of d- or l-selenomethionine to rats, the plasma concentrations of these two enantiomers...
Reaction of arenesulfonylimines of methyl trifluoropyruvate with 1,3-C,N-and-N,N-binucleophiles led to a variety of N-sulfonylated fluorine-containing heterocycles, including the fused ones.
Reaction of diethoxyphosphorylimine of methyl trifluoropyruvate with 1,3-C,N-and-N,N-binucleophiles led to a variety of N-phosphorylated fluorine-containing heterocycles, including the fused ones.
Resorcinol–formaldehyde aerogels obtained in methyl trifluoropyruvate (MTFP) possess a fluorinated matrix due to the mechanism of electrophilic substitution in the resorcinol moiety with the formation of C–C bond. The use of MTFP as a solvent also substantially accelerates the formaldehyde– r...
The first example of trifluoropyruvate phosphorylimines was prepared, and its capability for O- and S-amidoalkylation of water, alcohols, and compounds with the SH function was shown. Phenol and 4-methoxyphenol are O-alkylated, while 3-dimethylaminophenol and indole undergo regiospecific C-alkyl...
Solid acids – NiSO 4 /Al 2 O 3 , Fe 2 (SO 4 ) 3 /Al 2 O 3 and TiO 2 /SO 4 2− – appeared to be effective catalysts for the acid catalyzed synthesis of methyl ester of trifluoropyruvic acid. They are active at 15...
Organic alkyl and aryl phosphites are effective antioxidants and photostabilizers with applications in a wide range of polymers. The primary role of phosphites is to decompose hydroperoxide. However, aryl phosphites are also capable of reacting as antioxidants by negatively affecting the kinetic...
The radical telomerisation of trifluoroethylene (TrFE) with dimethyl phosphite (DMP) was investigated to synthesize fluorinated monoadducts bearing a phosphonate end-group such as HTrFEP(O)(OCH3)2. Among various radical initiators, di-tert-butyl peroxide (DTBP) was the most efficient one at 80–...
The unnatural amino acid analogue, 4-(phosphonomethyl)phenylalanine (Pmp, 2), has proven to be a valuable tool for studying protein-tyrosine kinase dependent signal transduction, where it is most often incorporated into peptides or peptide mimetics as a phosphatase-stable phosphotyrosyl mimetic....
Reversed-phase HPLC methods using C-18 and C-8 columns as well as various isocratic and gradient systems with aqueous ammonium acetate, methanol and acetonitrile are described for the separation of the impurities of mazipredone (11β,17-dihydroxy-21-(4-methyl-1-piperazinyl)-pregna-1,4-diene-3,20...
The reaction of dipolarophiles (several alkenes and alkynes) with ammonium cerium(IV) nitrate ((NH 4 ) 2 Ce(NO 3 ) 6 , CAN(IV)) in acetone under reflux gave 3-acetylisoxazole derivatives. In the case of acetophenone, 3-benzoylisoxazole derivatives were obtained. M...
A novel and mild fluorination/cyclization reaction of activated alkenes under metal-free conditions has been developed. Fluorinated radicals were produced from halogenated hydrocarbons by simple rongalit, meanwhile, no metal and extra base are needed. This method provides a general and rapid rou...
An efficient synthesis of trifluoromethyl-containing 2,3-allenols via carbonyl-yne reaction of 3,3,3-trifluoropyruvates with acetylenes is described. In the presence of MgBr2·Et2O the reaction of methyl trifluoropyruvate with hex-1-yne proceeds diastereoselectively. Trifluoromethyl-substituted ...
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