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991.
992.
Surface plasmon resonance (SPR) technique is used to follow, both in real time and in situ, the association between a physically adsorbed polymer of beta-cyclodextrin (pbetaCD) and different hydrophobically modified poly(N-isopropylacrylamide) (PNIPAM) copolymers containing either adamantyl or dodecyl groups. This association is due to the complex formation between the hydrophobic groups and the betaCD cavities. Therefore, the adsorbed amount of PNIPAM onto the pbetaCD layer depends on the substituent and on its substitution level. The association and dissociation rate constants are evaluated from the kinetics of PNIPAM adsorption. An estimation of the association constants leads to values higher than 10(4) M(-1), reflecting the strong interaction between these polymers. 相似文献
993.
R. O. Kochkanyan M. M. Nechitailov P. Byszewski A. N. Zaritovskii A. F. Popov 《Russian Journal of Organic Chemistry》2004,40(7):957-961
Reaction of C60 fullerene with ferrocene in the presence of aluminum chloride and aluminum in an inert atmosphere gave ferrocenyl-substituted fullerene 2C60 ·1.5(C5H5)2Fe ·3H2O. The product is a thermally stable iron-containing carbon cage in which the intersphere cavity is formed by three C60 polyhedra and is closed by cyclopentadienyl ligands via formation of four carbon-carbon bonds. 相似文献
994.
V. E. Blokhin Z. Yu. Kokoshko L. V. Kireeva E. V. Pushkareva 《Chemistry of Heterocyclic Compounds》1969,5(4):554-555
The divinyl, diallyl, and dipropargyl esters of pyridine-2,4-, pyridine-2,6-, and quinoline-2,4-dicarboxylic acids and the divinyl and dipropargyl esters of pyridine-2,5-dicarboxylic acid have been synthesized. 相似文献
995.
996.
997.
S. S. Mochalov T. P. Surikova Yu. S. Shabarov 《Chemistry of Heterocyclic Compounds》1976,12(7):738-741
5-Bromo- and 5-methoxy-3-ethylanthranils, respectively, were obtained by cyclization of o-nitrosopropiophenone under the influence of hydrogen bromide in benzene and hydrogen chloride in methanol. In these reactions, the starting nitroso ketone undergoes redox transformations that also proceed readily in an inert solvent in the absence of any cyclizing reagents.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 886–890, July. 1976. 相似文献
998.
999.
1000.
N. S. Prostakov Keti Sudzhi N. M. Mikhailova L. A. Murugova V. F. Zakharov 《Chemistry of Heterocyclic Compounds》1981,17(10):1038-1042
1-Methyl-1H-indeno[1,2-b]pyridine and 1-methyl-1H-5-(, -dicarbomethoxyvinyl)-(formyl, acetyl)indeno[3,2-b]pyridines were obtained by treatment of N-methyl-4-azafluorenium iodide, as well as mixtures of it with acetylenedicarboxylic ester, dimethylformamide (DMF), and phosphorus oxychloride or acetic anhydride, with bases. 4-Azafluoronenone was used to synthesize 9-(p-methoxyphenyl)-4-azafluoren-9-ol, which was reduced to 9-(p-methoxyphenyl)-4-azafluorene, and 1-methyl-1H-5-(p-methoxyphenyl)indeno[3,2-b]pyridine was obtained from the methiodide of the latter.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1382–1386, October, 1981. 相似文献