Zobrazeno 1 - 10
of 45
pro vyhledávání: '"R P Shishkina"'
Autor:
R. P. Shishkina, N. V. Sergienko
Publikováno v:
Russian Chemical Bulletin. 43:2083-2086
5- and 8-Amino-2-phenylnaphtho[2,3-d]-1,3-thiazole-4,9-diones were obtained by treatment of 3,5-diamino-2-chloro- and 2,5-diamino-3-chloro-1,4-naphthoquinones with sodium sulfide followed by condensation with benzaldehyde. Thermal and photochemical b
Autor:
R P Shishkina, V N Berezhnaya
Publikováno v:
Russian Chemical Reviews. 63:139-146
The review surveys the results of studies on the photolysis of 1,4- naphthoquinones with 2-dialkylamino- and heterocyclic amino-groups. New data on the structure of the primary photolysis products and the mechanisms of their subsequent dark reactions
Publikováno v:
Russian Chemical Bulletin. 42:903-908
Photolysis of 2-(4-alkyI(phenyl)piperazino)-3-amino-1,4-naphthoquinones affords 2-alkyl (phenyl)-1,2,3,4,12,12a-hexahydronaphtho[2′,3′∶4,5]imidazo[1,2-a]pyrazine-6,11-diols which recyclize at elevated temperatures to yield 1,2,3,4-tetrahydro-13
Publikováno v:
Russian Chemical Bulletin. 42:318-322
Using1H and13C NMR spectroscopy, naphthodihydroimidazolediols were identified as the primary products of photolysis of 2-dialkylamino-3-amino(alkylamino)-1,4-naphthoquinones. Their further non-photochemical (≪thermal≫) transformations depend on t
Autor:
V. N. Berezhnaya, R. P. Shishkina
Publikováno v:
ChemInform. 22
It was shown that 2-(4-alkylpiperazino)-3-chloro-1,4-naphthoquinones react on heating with NaN3 in DMF to form new heterocyclic quinones — 1,2,3,4-tetrahydro-13-alkyl-3,1-(iminoethano)benzo[g]quinoxaline-5,10-diones as well as the corresponding 2-(
Autor:
L. V. Ektova, R. P. Shishkina
Publikováno v:
ChemInform. 23
The oxidative coupling of 1,5-dihydroxynaphthalene with aromatic amines leads to the formation of N-aryl-5-hydroxy-1,4-naphthoquinone-4-imines. The yield of these products depends on the nature of the oxidizing agent.
Publikováno v:
ChemInform. 23
PMR and13C NMR spectroscopy was used to establish the structure of the primary products of the photolysis of 2-piperidino- and 2-morpholino-3-methoxy-l, 4-naph-thoquinones. A scheme for the subsequent dark transformations of these compounds is propos
Autor:
R. P. Shishkina, N. V. Sergienko
Publikováno v:
ChemInform. 26
5- and 8-Amino-2-phenylnaphtho[2,3-d]-1,3-thiazole-4,9-diones were obtained by treatment of 3,5-diamino-2-chloro- and 2,5-diamino-3-chloro-1,4-naphthoquinones with sodium sulfide followed by condensation with benzaldehyde. Thermal and photochemical b
Autor:
T. A. Stavitskaya, V. N. Berezhnaya, V. I. Eroshkin, V. P. Vetchinov, R. P. Shishkina, A. D. Bukhtoyarova
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 40:2094-2098
The photolysis of 2-dialkylamino-1,4-naphthoquinones is significantly more efficient when a methyl group is at C3. The quantum yields are 2–6 times greater than for 2-dialkylaminonaphthoquinones lacking a methyl group. 2-Monoalkyl-amino-1,4-naphtho
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 40:624-627
PMR and13C NMR spectroscopy was used to establish the structure of the primary products of the photolysis of 2-piperidino- and 2-morpholino-3-methoxy-l, 4-naph-thoquinones. A scheme for the subsequent dark transformations of these compounds is propos