N-Acetylation of (2,3,4,6-tetra-O-acetyl-a-D-glucopyranosyl) (2,3,4,6-tetra-0-acetyl-/?-D-glucopyranosyl)amine or bis(2,3,4,6-tetra-0-acetyl-/3-D-glucopyranosyl)amine afforded N-acetyl-bis(2,3, 4,6-tetra-0-acetyl-/3-D-glucopyranosyl)amine; deacetylation of the latter gave Af-acetyl-di-/3-Dglucopyranosylamine. Similarly, TV-acetylation of bis(2,3,4-tri-0-acetyl-/3-L-rhamnopyranosyl)amine led to ...

A series of N-benzylidenepyridin-2-amines (1a-j) were synthesized by heating 2-aminopyridine with different substituted aromatic aldehydes in the presence of toluene. The structures of the synthesized compounds were confirmed on the basis of IR, 1H NMR, 13C NMR and mass spectral data. The compounds 1a-j were screened for anthelmintic activity. Test results revealed that the compounds showed par...

Spergualin (SG) and 15-deoxyspergualin (DSG) are derivatives of spermidine. Their substrate and inhibitor activities toward amine oxidase from bovine plasma were determined. SG was a good substrate of amine oxidase next to spermidine. The Km and Vmax for SG were 46.5 microM and 0.429 microM/minute, respectively, whereas the Km and Vmax for spermidine were 111 microM and 3.75 microM/minute, resp...

[figure: see text] Chelation and aggregation in phenyllithium reagents with potential 5-, 6-, and 7-ring chelating ether and amine ortho substituents have been examined utilizing variable-temperature 6Li and 13C NMR spectroscopy, 6Li and 15N isotope labeling, and the effects of solvent additives. Both ether and amine form strong 5-ring chelates; 6-ring ether chelates compete well with THF, but ...

Amine-functionalized ZnO nanosheets were prepared through a one-step hydrothermal method by using monoethanolamine, which has a hydroxyl group, for covalent attachment on ZnO and a primary amine group to supply the amine-functionalization. We demonstrate that the terminal amine groups on ZnO surfaces substantially increase the capability of CO₂ capture via chemisorption, resulting in effective ...

density, viscosity and refractive index of pure, binary and ternary mixtures of diethanolamine (dea) and methyl diethanolamine (mdea) with water have been measured at different temperatures from 288.15 k to 323.15 k at atmospheric pressure. also, this study presents the effects of mixture composition and temperature upon these thermo- physical properties. to measure the density and refractive i...

The C-H amination of benzene derivatives was achieved using DDQ as photocatalyst and BocNH2 as the amine source under aerobic conditions and visible light irradiation. Electron-deficient and electron-rich benzenes react as substrates with moderate to good product yields. The amine scope of the reaction comprises Boc-amine, carbamates, pyrazoles, sulfonimides and urea. Preliminary mechanistic in...

A binary mixture of benzyl-amine and hexa-noic acid has been reacted to form the title salt, C(7)H(10)N(+)·C(6)H(11)O(2) (-). This crystal has a 1:1 stoichiometry of acid- and amine-derived species which contrasts with other related species which can have a number of other integer ratios of acid and amine components. The diffraction data indicate complete transfer of a proton from the acid to t...

0

Sarkhoon gas plant, located in south of Iran, has been installed to removal H2S contained in a high pressure natural gas stream. The solvent used for the H2S removal from gaseous stream is 34% by weight (wt%) Di-ethanol amine (DEA) solutions. Due to increasing concentration of heat stable salt (HSS) in solvent, corrosivity of amine solution had been increased. Reports indicated that there was c...