Synthesis of acrylic and α-substituted acrylic derivatives of chlorophos and some of its analogs

Conclusions The corresponding acrylic and-substituted acrylic derivatives were obtained from the reactions of acrylyl, methacrylyl, and-fluoracrylyl chlorides with chlorophos and some of its analogs; the physicochemieal constants of the products are presented.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 11, pp. 2616–2618, November, 1968.     

Synthesis and some properties of topochemical analogs of valinomycin

Chemistry of Natural Compounds -     

Synthesis and properties of styrenetricarbonylchromium and its analogs

The methods of synthesis and the reactivity of styrenetricarbonylchromium and its analogs as model objects for the study of the effect of the metal atom on the reactivity of the monomer -bond and the aromatic ring are described systematically and discussed. These compounds are unique initial substrates for the synthesis of metal-containing polymers and for the preparation of optical stereoisomers and materials for nonlinear optics.     

Correlation between the mechanical properties and the homogeneity of some photopolymerized acrylic/methacrylic networks1

Proton T_1ρ data obtained by CP/MAS solid-state ¹³C NMR at 100.56 MHz for different polyacrylate networks were correlated with their mechanical properties in order to determine the best mixture in terms of stress-at-break (σ), Young's modulus of elasticity (Y), and homogeneity of the monomers that are forming the solid network. The mixtures were formed by the photopolymerization of 40% trimethylolpropane triacrylate (TMPTA), 40% dipentaerythritol pentaacrylate (DPHPA), and 20% of a monomer from a series of poly(ethylene glycol) and poly(ethylene) dimethacrylate. Proton T_1ρ's in networks were not quite averaged to a single value by spin diffusion as in polymer blends, indicating extensive intermixing of TMPTA and DPHPA in forming the network, but with phase separation between the dimethacrylate homopolymer and the rest of the network that is dependent on the laser power. The stress-at-break and the Young's modulus of elasticity were determined for each of the mixtures at different values of the laser power used for the polymerization. © 1996 John Wiley & Sons, Inc.     

Anionarylation of acrylic and methacrylic acids derivatives with p- and m-phenylenebisdiazonium tetrafluoroborates

Chloro-, bromo- and thiocyanatoarylation of amides and nitriles of acrylic and methacrylic acids with bisdiazonium salts based on m- and p-phenylenediamines have been studied. 3,3′-[1,4(3)-phenylene]bis[2-halopropanamides(nitriles)] and 2-thiocyanato-(2-methyl)-3-[4(3)-thiocyanatophenyl]propinamides have been obtained as bishaloarylation and monothiocyanatoarylation products, respectively.     

Bis(fluoroalkyl)acrylic and methacrylic phosphate monomers, their polymers and some of their properties

Ten fluoromonomers of structure (R_FO)₂P(O)OCH₂CH₂OC(O)CRCH₂ were made in 30-64% yield by treating the chloridates (R_FO)₂P(O)Cl with HOCH₂CH₂OC(O)CRCH₂ in chloroform in the presence of triethylamine [R_F=CF₃CH₂, C₂F₅CH₂, C₃F₇CH₂, C₄F₉CH₂, C₄F₉CH₂CH₂ or C₆F₁₃CH₂CH₂; R  H or Me]. The chloromonomer (CCl₃CH₂O)₂P(O)OCH₂CH₂OC(O)CHCH₂ was obtained analogously in 29% yield. Polymerisation of the acrylate monomers, but not the methacrylate monomers, could be effected using α-azoisobutyronitrile as a radical initiator. Acrylic polymers having CF₃CH₂O, CCl₃CH₂O and C₆F₁₃CH₂CH₂O side-chains were obtained as translucent rubbers. Specimens of cotton fabric were treated with solutions of the polymers, and average water and oil repellency ratings measured. Fabric coated with the polymer with the C₆F₁₃CH₂CH₂O side-chain afforded protection from penetration of the test liquids. Treated fabrics were subjected to the limiting oxygen index (LOI) test according to BS EN ISO 4589-2 (1999): this test determines the point at which a material just burns in a volumetric flow of oxygen and nitrogen. The treated fabrics were more fire-resistant (LOI 22-29%) than the untreated fabric (LOI 18%). Fabric coated with the CCl₃CH₂O-based polymer can be considered fire-retardant (LOI 29%). The fluoromonomers were tested for anti-acetylcholinesterase activity and were found to be poor enzyme inhibitors; they are predicted to possess low acute toxicity.     

Synthesis and PMR properties of some dehydroalanine derivatives

A number of new β-N-alkylamino acids have been synthesised from N-acetyldehydroalanine, and their chromatographic and PMR properties examined. A selected peptide S-DNP-glutathione has also been subjected to alkaline degradation and the formation of dehydroglutathione has been shown by PMR.     

Synthesis and spectrophotometric study of some amino derivatives of thiophene analogs of chalcone

Eight amino derivatives of thiophene analogs of chalcone were obtained by reduction of the corresponding nitro derivatives with stannous chloride in concentrated hydrochloric acid, and their UV absorption spectra in dioxane were measured. The long-wave band was assigned to the corresponding fragments of the molecule on the basis of a comparison of the absorption curves of the investigated compounds with the curves of simpler compounds — aminoacetophenone, aminobenzalacetone, acetothienone, etc.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 198–203, February, 1977.     

Synthesis and some properties ofN-polynitromethyl derivatives of fused benzotriazoles

The procedures for the synthesis ofN-polynitromethyl derivatives of benzo[1,2-d;4,5d]ditriazole-4,8-dione are described. Some chemical properties of the compounds obtained are investigated.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1623–1625, September, 1993.     

Synthesis and antistatic properties of some surface-active perimidine derivatives

Perimidine derivatives containing as substituents high-molecular-weight alkyl, acyl, and perfluoroalkyl groups in positions 1, 2, 4(9) and 6(7) have been synthesized. The sulfonation of perimidines has been performed for the first time using 2-perfluoroalkyl- and 2- undecylperimidines as examples; it takes place exceptionally readily in this series. It has been shown that the best antistatic effect on application to the surface of polymers is given by 2-perfluoroalkyl-perimidine-6(7)-sulfonic acid).Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 4, pp. 550–553, April, 1980.