Ethoxycarboxylation of methylpyridines

The ethyl esters of pyridine carboxylic acids were obtained by reaction of the ethoxycarbonyl radical with methyl-substituted pyridines. A mechanism is proposed for the carboxylation reaction.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 224–225, February, 1976.     

Kinetics of the oxidative addition of acetone to aromatic compounds under the action of Mn(III) acetate

Conclusions Kinetic data indicate that the principal path followed in the oxidative addition of acetone to aromatic compounds (ArH) under the action of Mn(III) acetate in AcOH solution to be the formation of a [CH₂=C(CH₃)-OMn^III·ArH] complex, which breaks down with rupture of the Mn^III-O bond and subsequent addition of the acetonyl radical to the coordinated ArH (limiting step); this is, in turn, followed by rapid one-electron oxidation of the intermediate adduct radical by the Mn(III) ion, and formation of the final product.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 9, pp. 1994–1999, September, 1982.     

On the feasibility to study inverse proximity effect in a single S/F bilayer by Polarized Neutron Reflectometry

Here we report on a feasibility study aiming to explore the potential of Polarized Neutron Reflectometry (PNR) for detecting the inverse proximity effect in a single superconducting/ferromagnetic bilayer. Experiments, conducted on the V (40 nm)/Fe (1 nm) S/F bilayer, have shown that experimental spin asymmetry measured at T = 0.5T _C is shifted towards higher Q values compared to the curve measured at T = 1.5T _C . Such a shift can be described by the appearance in superconducting vanadium of magnetic sublayer with a thickness of 7 nm and a magnetization of +0.8 kG.     

XAFS structural study of specific features of the active component of model palladium catalysts

Model low-percentage metal oxide palladium catalysts are prepared from acetate complexes of Pd and Mn to study the nature of the activity and the genesis of nanostructured membrane catalyst Pd-Mn systems. A comprehensive study of the prepared model precursor compounds; specific features of their metal components in gels and oxides; and the genesis of the active component, local structure, and charge state is performed by EXAFS and XANES. Possible versions of structural models for the stabilization of metals on oxide supports aare discussed.     

Synthesis of 4,6-Disubstituted 2-Thioxo-1,2-dihydropyridine-3-carbonitriles by the Reaction of Acetylenic Ketones with Cyanothioacetamide

Russian Journal of General Chemistry - The reaction of acetylenic ketones with cyanothioacetamide in the presence of morpholine yields 4,6-disubstituted...     

Synthesis and Properties of 4,6-Dimethyl-5-pentyl-2-thioxo-1,2-dihydropyridine-3-carbonitrile and 3-Amino-4,6-dimethyl-5-pentylthieno[2,3-b]pyridines

The reaction of 3-pentylpentane-2,4-dione with cyanothioacetamide afforded 4,6-dimethyl-5-pentyl-2-thioxo-1,2-dihydropyridine-3-carbonitrile. Alkylation of the latter led to the formation of 2-alkylsulfanyl-4,6-dimethyl-5-pentylpyridine-3-carbonitriles or 3-amino-4,6-dimethyl-5-pentylthieno[2,3-b]pyridines, depending on the alkylating agent and reaction conditions. The structures of the key compounds were proved by 2D NMR spectroscopy and X-ray analysis. Biological activity of the synthesized compounds was evaluated in silico. Some compounds were experimentally found to stimulate growth of sunflower seedlings.