D 32 Dehydroiodination of 2-iodo-3-(polyfluoroalkyl)propoxymethyloxiranes [Electronic resource] / D. N. Bazhin, T. I. Gorbunova, A. Ya. Zapevalov, V. I. Saloutin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2007. - Vol. 56, № 11. - P2236-2238. - Bibliogr. : p. 2238 (8 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): DEHYDROIODINATION -- GLYCIDYL ETHERS -- OLEFINS -- ORGANOFLUORINE COMPOUNDS Аннотация: Dehydroiodination of 2-iodo-3-(polyfluoroalkyl)propoxymethyloxiranes upon treatment with 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) afforded (polyfluoroalk-2-enyl)oxymethyloxiranes as E-and Z-isomers in ratio depending on the nature of the fluoroalkyl substituent. \\\\Expert2\\nbo\\Russian Chemical Bulletin\\2007, 56 (11), 2236.pdf |
P 99 Pyrolysis of polyolefins in high-boiling solvents [Электронный ресурс] / E. Andreikov, I. S. Amosova, Yu. A. Dikovinkina, M. G. Pervova // Solid Fuel Chemistry. - 2013. - Vol.47, №4. - С. 209-219. - Bibliogr. : p. 218-219 (47 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ALIPHATIC HYDROCARBONS -- COAL TAR PITCH -- HIGH-BOILING SOLVENTS Аннотация: The pyrolysis of polyethylene and polypropylene in vacuum residue and coal-tar pitch solvents was studied in a batch reactor at atmospheric pressure in a temperature range of 380-420 °C. Aliphatic hydrocarbons and C 5-C32 normal olefins and isoolefins were the main pyrolysis products of the polyolefins and vacuum residue, which also underwent thermal degradation at these temperatures. The total conversion of a polypropylene-vacuum residue mixture into gaseous and distillate products was nearly additive; upon the pyrolysis of polypropylene in pitch and of polyethylene in vacuum residue and pitch, the yield of distillate products decreased and the paraffin/olefin ratio in these products increased. The observed regularities were explained by hydrogen transfer from the solvents to the intermediate radical products of the thermal decomposition of polymer chains. The reactions of the resulting of olefins with the solvents can also occur to a lesser degree. The greatest deviations from additivity were observed in the pyrolysis of polyethylene in the solvents used |
A 10 A decade update on solvent and catalyst-free neat organic reactions: a step forward towards sustainability [Electronic resource] / A. Sarkar, S. Santra, S. K. Kundu, G. V. Zyryanov, O. N. Chupakhin, V. N. Charushin, A. Majee // Green Chemistry. - 2016. - Vol. 18, № 16. - С. 4475-4525 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ONE-POT SYNTHESIS -- DIELS-ALDER REACTIONS -- ELECTRON-DEFICIENT OLEFINS Аннотация: Particular success has been achieved in the synthesis of new products and in processes since the twelve principles of "green chemistry" were formulated in the 1990s. These products and processes are more compatible with human health, society, and the environment. In this review, a collection of research reports have been documented from the viewpoint of green chemistry. The main theme of this review is neat reactions, which are solvent and catalyst-free reactions. Neat reactions in the absence of any solvent or catalyst with concise summaries of microwave, ball milling, and neat reactions have been described. \\\\expert2\\NBO\\Green Chemistry\\2016, v.18, N 16, p.4475.pdf |
C 73 Combination of NH2OH•HCl and NaIO4: an effective reagent for molecular iodine-free regioselective 1,2-difunctionalization of olefins and easy access of terminal acetals / N. C. Ghosal, S. Santra, S. K. Kundu, A. Hajra, G. V. Zyryanov, A. Majee // RSC Advances. - 2015. - №5. - С. 56780-56788 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): NH2OH -- HCl -- NaIO4 \\\\expert2\\NBO\\RSC Advances\\2015. Vol. 5, P.56780-56788.pdf |