Synthesis of γ-fluorotrinitroalkanes

Conclusions 1-Fluoro-2-methyl-3, 3,3-trinitropropane, 1-fluoro-2-ethyl-3,3,3-trinitropropane, and 1-fluoro-1, 2-dimethyl-3, 3, 3-trinitropropane have been prepared by fluorination of polynitromercury compounds with elemental fluorine.Translated from Izvestiya. Akademii Nauk SSSR, Seriya. Khimicheskaya, No. 7, pp. 1601–1602, July, 1969.     

Electronic structures and reactivities of derivatives of 1,4-dihydropyridines. 3. Enthalpies of elementary processes in the 1,4-dihydronicotinamide series

The heat effects of the elementary processes involved in electron and hydrogen transfer with the participation of 1,4-dihydropyridines were calculated by the semiempirical MINDO/3 method. The effect of a number of side and parallel processes on the kinetic principles is discussed in the case of the oxidation of 1-methyl-1,4-dihydronicotinamide. The calculated and experimental data are compared.See [1] for Communication 2.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 1, pp. 63–66, January, 1988.     

On the algebraic independence of the values of E-functions satisfying nonhomogeneous linear differential equations

We prove a theorem which reduces the investigation of the algebraic independence of solutions of linear nonhomogeneous systems of differential equations to the investigation of homogeneous systems. We use this theorem to prove the algebraic independence of the values of certain E-functions.Translated from Matematicheski Zametki, Vol. 5, No. 5, pp. 587–598, May, 1969.In conclusion I wish to thank my supervisor. A. B. Shidlovskii, for posing this problem and for help in the preparation of this note.     

General solutions of nonlinear equations in the geometric theory of the relativistic string

General solutions for the system of nonlinear equations in the second order partial derivatives with two independent variables are obtained. They determine the basic differential forms of the two-dimensional minimal surface embedded inton-dimensional pseudo-Euclidean space.