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L. M. Kapkan A. Yu. Chervinskii T. M. Pekhtereva Yu. I. Smirnov A. F. Dmitruk 《Theoretical and Experimental Chemistry》1989,25(3):338-341
Cyclic hydrazides (derivatives of phtalhydrazide,pyrozolidone-3, indazolone, cyclic hydrazide camphoric acid) are studied by the NMR1H method. The size of the dihedral HNNH angle of several model compounds (pyrozolidone-3, cyclic hydrazide norcamphoric acid) are calculated by the MINDO/3 SSF MO LCAO method. It is shown that in the hydrazides with HNNH dihedral angle 0–70° the magnitude of the HNNH spin-spin interaction constant does not exceed 1 Hz. The form of its dependence on the dihedral angle is determined.Translated from Teoreticheskaya i Éksperimental'naya Khimiya, Vol. 25, No. 3, pp. 363–366, 1989. 相似文献
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5, p. 692, May, 1991. 相似文献
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T. V. Stupnikova T. V. Nuzhnaya N. A. Klyuev A. Yu. Chervinskii 《Chemistry of Heterocyclic Compounds》1982,18(2):164-169
The reaction of 4-(3-indolyl)pyrimidine methiodide with alkali gives a stable anhydro base, which reacts under mild conditions with methyl iodide to give 1-methyl-4-(1-methyl-3-indolyl)pyrimidinium iodide. On the basis of the calculated molecular diagrams of both compounds it was concluded that they have high reactivities. The reaction of the anhydro base with an aqueous methanol solution of KOH, concentrated NH4OH, hydrazine hydrate, and a mixture of malonic acid dinitrile with triethylamine leads to 3-acetylindole, 4-(3-indolyl)pyrimidine, 3(5)-(3-indolyl)pyrazole, and 2-amino-3-cyano-6-(3-indolyl)pyridine, respectively. 1-Methyl-4-(1-methyl-3-indolyl)pyrimidinium iodide under the same conditions gives similar compounds that contain a methyl group attached to the indole nitrogen atom. The structures of the synthesized compounds were confirmed by their IR, UV, PMR, and mass spectra.See [1] for our preliminary communication.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 212–218, February, 1982. 相似文献
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Gorkunenko O. A. Vdovichenko A. N. Chervinskii A. Yu. Kapkan L. M. Vaiman G. E. 《Theoretical and Experimental Chemistry》2004,40(1):12-16
The contributions from anisotropic magnetic screening and electronic effects to the relative chemical shifts of the NH protons in the amides and N,N-dimethylhydrazides of succinic and glutaric acids were calculated. It was shown that the splitting of the signals of the NH protons is largely determined by the redistribution of electron density in the molecule during the conformational transition. 相似文献
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G. A. Gartman V. I. Proshutinskii A. Yu. Chervinskii P. G. Neifel'd G. G. Kudymov 《Journal of Structural Chemistry》1990,31(3):490-493
A. M. Gor'kii Perm' State University. Institute of Physical Organic Chemistry and Coal Chemistry, Academy of Sciences of the Ukrainian SSR. Translated from Zhurnal Strukturnoi Khimii, Vol. 31, No. 3, pp. 133–136, May–June, 1990. 相似文献
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E. K. Slipchenko A. F. Choban A. S. Lyavinets K. A. Chervinskii 《Russian Journal of General Chemistry》2006,76(1):55-58
The kinetics of alkylation of sodium carbonate with 1-bromobutane in dimethyl sulfoxide were studied. The reaction was revealed to tend to autoinhibition. The mechanism of autoinhibition was established, ways of avoiding it were proposed, and the role of solvent in this process was described. Carbonate ion was found to react as ion pair with specifically solvated sodium cation. 相似文献