Výsledky vyhledávání - "R. L. Ushakova"

Mass spectrometric study of 1,2,4- and 1,3,4-oxadiazoles containing indole substituents

Autor: Vladimir G. Zaikin, R. L. Ushakova, Mikaya Anzor I, V. I. Kelarev, G. A. Shveikhgeimer

Publikováno v: Chemistry of Heterocyclic Compounds. 22:442-446

1,2,4- and 1,3,4-Oxadiazoles containing indole substituents decompose upon electron impact due to breakage of bonds in the oxadiazole ring. Skeletal rearrangements may occur in the molecular ions of 2,5-diaryl-1,3,4-oxadiazoles due to migration of th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b4b6c1fd7759ad340eabc99b87a104f0
https://doi.org/10.1007/bf00542788

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Synthesis and properties of sym-triazine derivatives. 7. Synthesis of pyridyl-substituted 2-amino- and 2,4-diamino-sym-triazines

Autor: V. I. Kelarev, M. Bellul, Mikaya Anzor I, Karakhanov Robert A, R. L. Ushakova

Publikováno v: Chemistry of Heterocyclic Compounds. 24:550-555

N-Substituted 2,4-diamino-6-pyridyl-sym-triazines were synthesized by cyclocondensation of pyridinecarboxylic acid esters with biguanides. 4,6-Disubstituted 2-amino-sym-triazines containing pyridyl residues were obtained by the reaction of pyridineca

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::50de13c2a7b8314532c4b1028ca75283
https://doi.org/10.1007/bf00755698

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Mass spectra of methylsubstituted monosila- and monogermacyclobutanes, 1,2- disila- and 1,2-digermacyclopentanes. Some correlations with thermal decomposition

Autor: V. Yu. Orlov, Leonid E. Gusel'nikov, N. S. Nametkin, R. L. Ushakova

Publikováno v: Organic Mass Spectrometry. 6:309-316

The mass spectra of 1,1-dimethyl-1-silacyclobutane (I—as reported by Cherniak et al.),6, 1,1-dimethyl-1-germacyclobutane (II), 1,1,2,2-tetramethyl-1,2-disilacyclopentane (III) and 1,1,2,2-tetramethyl-1,2-digermacyclopentane (IV) are compared and so

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5307db981112b6e5ce9a18e70ef5c354
https://doi.org/10.1002/oms.1210060309

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Investigation of stereoisomers of 4-alkenyl-trans-decahydroquinol-4-ols in mixtures by the method of reaction chromato-mass spectrometry

Autor: Vladimir G. Zaikin, N. F. Marchenko, R. L. Ushakova, Mikaya Anzor I, L. I. Ukhova

Publikováno v: Chemistry of Heterocyclic Compounds. 22:983-985

The mass spectra of the appropriate 4-ethyl derivatives, which provide the determination of the configuration of the 4 position in the initial alcohols, are registered in the chromato-mass spectrometric investigation of mixtures of the stereoisomeric

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bc24c355e6e40c8b4a453719c1890298
https://doi.org/10.1007/bf00478130

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Synthesis and pyrolysis of (cyclobutylmethyl)trimethylsilane

Autor: N. S. Nametkin, O. M. Startseva, R. L. Ushakova, V. M. Vdovin, L. E. Gusel'nikov

Publikováno v: Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 19:454-456

1. The reaction of silicon hydride with methylenecyclobutane and methylchlorosilane with a subsequent methylation of the adduct yielded (cyclobutylmethyl)trimethylsilane. 2. A thermal decomposition of (cyclobutylmethyl)trimethylsilane yielded ethylen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::776174d7d289fc5f340ed34cda915ce0
https://doi.org/10.1007/bf00853418

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