Diimidazo[4,5-b:4′,5′-e]pyridine: synthesis and nucleophilic aromatic substitution reaction

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Synthesis of aliphatic hydrocarbons by the hydropolymerization of acetylene

Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 6, pp. 1453–1454, June, 1988.     

The pyramidal life cycle of economic structures

The pyramidal character of life cycles of economic structures is empirically confirmed on the basis of official statistical data of the years 2003 and 2004. The ergodic hypothesis is applied as one of methods of economic forecasting in evolutionary economics, econophysics and applied researches.     

Catalytic hydroformamination of dihydrofurans

Conclusions A preparative method has been developed for the synthesis of 3-(N-alkyliminomethyl)-tetrahydrofurans and 3-(N, N-dialylaminomethyl)tetrahydrofurans by the hydroformamination of 2,3- and 2,5-dihydrofurans in the presence of HRh(CO)(PPh₃)₃.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 5, pp. 1198–1199, May, 1989.     

A facile high-yield solvothermal route to tin phosphide Sn4P3

An effective method of synthesis of tin phosphide Sn₄P₃ starting from metallic tin and amorphous red phosphorus by a low-temperature (200 °C) solvothermal reaction in ethylenediamine is offered. The key parameters of this process - duration, temperature, and the ratio of initial components (Sn/P) are studied. The structure, phase composition, and morphology of the products are investigated using powder X-ray diffraction and scanning electron microscopy. Different synthetic ways for tin phosphide are discussed and compared with the proposed one. The mechanism of solvothermal preparation of tin phosphide in ethylenediamine is discussed. It is shown that the proposed solvothermal method opens up the possibility of preparing other metal-rich phosphides.     

A new synthetic route to chiral 3-aryl-5-ethyl-1,4,2-oxazaphosphorines

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The features of hydrogen ignition over Pt and Pd foils at low pressures

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