Synthesis of phosphorus-containing polycyclic derivatives by phosphorylation of hydroxyl-containing diimines

Russian Journal of General Chemistry -     

PIII-derivatives of methyl mercaptoacetate

Dichlorophenylphosphine and dichlorodiethylamidophosphite react with methyl (trimethylsilylthio)acetate to substitute the methoxycarbonylmethylthio group for one Cl atom. Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 12, pp. 2554–2555, December, 1998.     

Calix[4]resorcinols as Stabilizers for Rubber Stocks Based on Butadiene-Acrylonitrile Rubbers

Modification of tetramethylcalix[4]resorcinol with dimethylaminomethyl and 3,5-di-tert-butyl-4-hydroxybenzyl fragments was studied. The antioxidative activity of these macrocyclic stabilizers in rubber stocks based on butadiene-acrylonitrile rubber was examined.     

1,3,4-thiazaphosphol-2-ines containing acetal groups in the molecule

Russian Journal of General Chemistry -     

Reaction of N,N-Bis(2-hydroxy-1-naphthaldehyde)-ethylenediimine with ethylene chlorophosphite

Russian Journal of General Chemistry -     

Interaction of ethylenechlorophosphite with hydroxyl-containing azomethines

Russian Journal of General Chemistry -     

Interaction of 1,1′-(hexane-1,6-diyl)bis[3-(4,4-diethoxybutyl)urea] with resorcinol derivatives. Synthesis of bisarylpyrrolidines

Russian Journal of General Chemistry -     

Extraction of lanthanide ions from acidic and strongly acidic media by phosphine oxide derivatives using temperature-induced phase separation

A composite for the extraction of lanthanide ions from strongly acidic media by temperature-induced phase separation was designed based on the nonionic surfactant Triton X-100 and new phosphine oxide derivatives. The dependence of the efficiency and selectivity of micellar extraction on the length of the hydrophobic substituent at the P=O group is determined by both the influence of hydrophobic substituents on the electron-donor capacity of the P=O group and the solubility of phosphine oxides in aqueous and micellar phases. The nitric acid concentration was found to influence the efficiency of extraction of lanthanide ions by phosphine oxides with different structures. An increase in the concentration of nitric acid in an aqueous medium from 0.1 to 1 mol L⁻¹ leads to a decrease in the degree of extraction by water-soluble derivatives and a substantial increase in the degree of extraction by phosphine oxides, which are soluble only in the micellar phase of Triton X-100.     

Synthesis of Adenines with a Phosphorus-Containing Group in the 9-Position

Adenine derivatives with a phosphorus-containing substituent on N⁹ have been synthesized, and their structure has been confirmed by ¹H, ¹³C, and ³¹P NMR and IR spectroscopy, X-ray diffraction, MALDI mass spectrometry, and elemental analysis.