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Các bài báo tiêu biểu
Preparation of highly dispersed copper oxide by thermal destruction of binuclear CuII monofluoroacetate in zeolite Y cavities
Tập 49 - Trang 1365-1368 - 2000
Thermal destruction of the binuclear monofluoroacetate complex Cu2(CH2FCOO)4 deposited on zeolite Y was studied by the TG-DTA and ESR methods. Large particles of copper oxide are not formed and fine dispersion of CuO in the matrix is observed due to low temperatures of the destruction of the supported complex (240–250°C) and restriction of the process mainly to large cavities of the zeolite.
Synthesis and selected properties of N-substituted pyrrolo[2,1-c]-1,3-diazacycloalkano[1,2-a]pyrazinones
Tập 59 - Trang 1254-1266 - 2010
The reactions of methyl α-(2-formyl-1H-pyrrol-1-yl)carboxylates with N-substituted aliphatic 1,2-, 1,3-, and 1,4-diamines afford new pyrrole-containing heterocyclic systems: 1,2,3,10b-tetrahydroimidazo[1,2-a]pyrrolo[2,1-c]pyrazin-5(6H)-ones, 1,3,4,11b-tetrahydro-2H-pyrrolo[2′,1′:3,4]pyrazino[1,2-a]pyrimidin-6(7H)-ones, and 1,2,3,4,5,12b-hexahydro-pyrrolo[2′,1′:3,4]pyrazino[1,2-a][1,3]diazepin-7(8H)-ones. The reduction of these compounds with different reagents was studied.
Chemistry of di- and tetrahydropyrans 8. Epoxidation of 3-aryloxy-4-methyl-3,6-dihydro-2H-pyrans
Tập 37 - Trang 525-528 - 1988
Reaction of 3-aryloxy-4-methyl-3,6-dihydro-2H-pyrans with peracids takes place stereo-selectively to give trans-3-aryloxy-4-methyl-4,5-epoxytetrahydropyrans.
Synthesis of steroids and related substances Communication 43. Total synthesis of (±)-d-homo-18-nor-9(11)-androstene-3, 17a-diol
Tập 8 - Trang 269-278 - 1959
The cell effect in the decomposition of hydroperoxides catalyzed by compounds of metals
Tập 24 - Trang 224-229 - 1975
Infrared spectra of hexathiocyanate complexes of nickel
Tập 20 - Trang 2335-2338 - 1971
The IR absorption spectra of hexathiocyanate complexes of nickel (II) were studied in the crystalline state (400–4000 cm−1) and in aqueous solutions (2000–2400 cm−1). All the investigated compounds contained monodentate isothiocyanate groups.
Thermochemical determination of the structure of negative ions with the data from resonance electron capture spectrometry. 2. 5-Substituted 2-furancarboxylic acids and their esters
Tập 40 Số 9 - Trang 1812-1817 - 1991
The energetics of isomerization and fragmentation of carboxylic acids and their esters from the furan series were investigated in conditions of resonance electron capture with the formation of negative ions. The enthalpies of formation of fragmentary negative ions were determined and the structure of some charged and neutral products of dissociation of these compounds was established. Schemes of the hydrogen and backbone rearrangements were proposed.