Ni(0)-Catalyzed Dimerization of o-Keto Carboxylic Acid Pseudochlorides
作者:T. A. Yangirov、A. A. Fatykhov、E. A. Sedova、N. G. Gileva、R. R. Khafizova、E. S. Meshcheryakova、L. M. Khalilov、V. A. Kraikin
DOI:10.1134/s1070428019050142
日期:2019.5
3′-diaryl-3,3′-diphthalides by dehalogenation of o-keto carboxylicacid pseudochlorides is implemented. The feature of the new protocol is that the reaction is carried out in the presence of a zero-valent nickel complex catalyst generated in situ by mixing zinc powder, nickel(II) chloride, triphenylphosphine, and 2,2′-bipyridine. Along with the target dimerization products of pseudochlorides, minor products were
Synthesis of ?- phenylanthraquinone by thermal intramolecular dehydrochlohination of p-(3-chloro-3-phthalidyl)diphenyl
作者:V. A. Kovardakov、M. G. Zolotukhin、S. N. Salazkin、S. R. Rafikov
DOI:10.1007/bf00953497
日期:1983.4
Gas Transport Coefficients of Phthalide-Containing High-<i>T</i><sub>g</sub> Glassy Polymers Determined by Gas-Flux and NMR Measurements
作者:Carolina García、Ángel E. Lozano、José G. de la Campa、Yakov Vygoskii、Mihail Zolotukhin、Javier de Abajo、Leoncio Garrido、Julio Guzmán
DOI:10.1021/acs.macromol.5b00183
日期:2015.4.28
The synthesis of three aromatic polymers containing phthalide cardo groups having high inherent viscosities is described. Polyimides PIC-6F and PIC-TB were prepared from a cardo diamine and two different dianhydrides, and poly(phthalidylidenearylene) (PPDAr) was prepared by a precipitative Friedel-Crafts homopolycondensation of 3-(4-biphenylyl)-3-chlorophthalide. All polymers presented high glass transition temperatures varying between 600 and 690 K. Dense membranes prepared by casting from N,N-dimethylacetamide solutions exhibited good mechanical properties and decomposition temperatures over 770 K under a N-2 atmosphere. Results of gas transport measurements of O-2, N-2, and CO2 were comparatively analyzed based on the chemical structure of the polymers. Additionally, the solubility, diffusion, and permeability coefficients of [C-13]O-2 in these membranes were determined by C-13 NMR spectroscopy and pulsed-field gradient NMR measurements, and the results were in good agreement with those determined with pressure-driven measurements. It was found that membranes of PPDAr exhibited the highest permeability and CO2/N-2 and CO2/O-2 permselectivities.
Salazkin, S. N.; Rafikov, S. R.; Tolstikov, G. A., Doklady Chemistry, 1982, vol. 262, p. 14 - 17
作者:Salazkin, S. N.、Rafikov, S. R.、Tolstikov, G. A.、Zolotukhin, M. G.
DOI:——
日期:——
ZOLOTUXIN, M. G.;SEDOVA, EH. A.;SALAZKIN, S. I.;RAFIKOV, S. R., VINITI, 6009-83
作者:ZOLOTUXIN, M. G.、SEDOVA, EH. A.、SALAZKIN, S. I.、RAFIKOV, S. R.