Zobrazeno 1 - 10
of 78
pro vyhledávání: '"V. V. Poskonin"'
Publikováno v:
Russian Journal of General Chemistry. 91:133-153
This review summarizes the data on 2(5H)-furanone, 5-hydroxy-2(5H)-furanone, and some substituted hydrofuranones with respect to their poorly studied or unexplored reactions and synthesis of functionally substituted hydrofuranones on their basis, pro
Autor:
Badovskaya Larisa A, V. V. Poskonin
Publikováno v:
Russian Journal of General Chemistry. 88:1568-1579
General information on the reactions of furfurals with hydrogen peroxide is given. We have discussed the Baeyer–Villiger rearrangement of furan 2-hydroxyhydroperoxides and tautomeric transformations with proton transfer of 2-hydroxyfuran and β-for
Publikováno v:
Russian Chemical Bulletin. 66:593-599
The review analyzes the effects of the reaction conditions on the direction of the reactions between furans/formylfurans and hydrogen peroxide. The revealed dependences serve for the synthesis of the desired products and for development of new method
Autor:
V. V. Poskonin, Badovskaya Larisa A
Publikováno v:
Kinetics and Catalysis. 56:164-172
Homogeneous catalytic reactions of furfural oxidation by hydrogen peroxide in an aqueous medium in the presence of catalytic amounts of a vanadium, niobium, molybdenum, or chromium salt have been studied to compare them with the acid-autocatalytic re
Publikováno v:
Russian Journal of General Chemistry. 84:1133-1140
Data on the effect of acid-base properties of the medium in the pH range 0–9 on the intensity of transformation of 2-furaldehyde and the direction of the multi-stage reactions in the 2-furaldehyde-H2O2-H2O system in the presence of VOSO4 and withou
Publikováno v:
IOP Conference Series: Materials Science and Engineering. 463:032043
Autor:
V. V. Poskonin
Publikováno v:
Chemistry of Heterocyclic Compounds. 45:1177-1183
The effect of the catalytic characteristics of compounds of niobium(II) and (V) on the duration and the composition of the products during the oxidation of furfural by aqueous hydrogen peroxide was studied. It was established that the process is inte
Autor:
V. V. Poskonin
Publikováno v:
Chemistry of Heterocyclic Compounds. 44:295-300
The special features of the oxidation of furfural by aqueous hydrogen peroxide in the presence of vanadyl sulfate and ethanol has been studied for the first time. It has been established that this reaction proceeds with the formation of previously un
Autor:
V. V. Poskonin, Badovskaya Larisa A
Publikováno v:
Chemistry of Heterocyclic Compounds. 39:594-597
The conversion of 5-hydroxy-2(5H)-furanone into succinic acid in aqueous solution has been detected experimentally for the first time, indicating the possibility of forming and hydrolyzing its previously unknown tautomeric forms. The accelerating eff
Publikováno v:
Russian Journal of Organic Chemistry. 38:251-255
The 4-hydroxy-2-butenolide was established by polarographic method to undergo in water solutions fast tautomeric and acid-base transformations. Depending on pH of the medium the compound is present either as a cyclic irreducible form (at pH 0-4) or i