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1.

Вид документа : Статья из журнала
Шифр издания : 54/B 12
Автор(ы) : Egorova D. O., Gorbunova T. I., Pervova M. G., Demakov V. A.
Заглавие : Bacterial degradation of a mixture obtained through the chemical modification of polychlorinated biphenyls by polyethylene glycols [Электронный ресурс]
Место публикации : Applied Biochemistry and Microbiology. - 2014. - Vol. 50, № 7. - С. 722-729
Систем. требования: http://download-v2.springer.com/static/pdf/131/art%253A10.1134%252FS0003683814070023.pdf?token2=exp=1428652880~acl=%2Fstatic%2Fpdf%2F131%2Fart%25253A10.1134%25252FS0003683814070023.pdf*~hmac=3182eca3e5ccea6ab1f49dd6b89a557b80a88fa01d0e203f57bcd3fed34fc4d2
Примечания : Bibliogr. : p. 729 (29 ref.). - 10.04.15
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): bacterial degradation--chemical modification--polyethylene glycols
Аннотация: Polychlorinated biphenyls (PCBs), also known by the trade name Sovol, are toxic industrial wastes. They have been subjected to chemical treatment by polyethylene glycols (PEGs) and potassium hydroxide. As a result of the interaction of the Sovol with various molecular mass PEGs (MMPEG-4 ∼ 200, MMPEG-22 ∼ 1000), water-soluble mixtures M1 and M2 containing mono(polyethylene glycol)oxy-derivatives (PCB-PEG-4 and PCB-PEG-22), polychlorobiphenylols, and unreacted PCB congeners (PCB 44, PCB 47, PCB 49, PCB 52, and PCB 66) were obtained. It was shown for the first time that mixtures M1 and M2 are susceptible to bacterial degradation without their fractionation. According to the gas-liquid chromatography with flame-ionization and mass-spectrometric detection, the Rhodococcus wratislaviensis KT112-7 strain degraded all of the chemical compounds occurring in the mixtures. In a 5-day experiment, it was found that the KT112-7 strain decomposes mono(polyethylene glycol)oxy-derivatives completely (by 100%) and polychlorobiphenylols and PCB congeners by 90–95% in the M1 and M2 mixtures. The culture medium did not contain transformation products, whereas free chlorine ions were accumulated (72–94% of the maximum possible amount). Thus, the use of the chemical modification and consecutive bacterial degradation provided an effective destruction of technical PCB mixtures with a high content of highly chlorinated congeners
\\\\expert2\\nbo\\Applied Biochemistry and Microbiology\\2014, v.50, N 7, p.722-729.pdf
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2.

Вид документа : Статья из журнала
Шифр издания : 54/F 33
Автор(ы) : Gorbunova T. I., Pervova M. G., Plotnikova K. A., Saloutin V. I., Chupakhin O. N.
Заглавие : Features of polychlorinated biphenyls nitration [Электронный ресурс]
Место публикации : Russian Journal of General Chemistry. - 2015. - Vol. 85, № 7. - С. 1611-1616
Систем. требования: http://link.springer.com/article/10.1134/S1070363215070063
Примечания : Bibliogr. : p. 1616 (21 ref.). - 19.01.2016
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): polychlorinated biphenyls --gas chromatography --nitration
Аннотация: Nitration of mono-, di-, and trichlorobiphenyls has been studied. The nitration degree depends on the number of chlorine substituents; one to four nitro groups can be introduced. The conclusions have been confirmed by results of nitration of the "Trikhlorbifenil" technical mixture of polychlorinated biphenyls.
\\\\expert2\\nbo\\Russian Journal of General Chemistry\\2015, V. 85, N 7, p. 1611-1616.pdf
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3.

Вид документа : Статья из журнала
Шифр издания : 54/P 80
Автор(ы) : Gorbunova T. I., Subbotina J.O., Saloutin V. I., Chupakhin O. N.
Заглавие : Polychlorinated biphenyls: Correlation between experimental data and quantum-chemical simulation [Электронный ресурс]
Место публикации : Russian Journal of General Chemistry. - 2014. - Vol.84, №3. - С. 486-495
Примечания : Bibliogr. : p. 494-495 (43 ref.). - 12.08.2014
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): polychlorinated biphenyls--sovol mixture --nucleophilic substitution
Аннотация: In order to comprehend the data on reactivity of polychlorinated biphenyls of the Sovol mixture in nucleophilic substitution reactions we have performed quantum-chemical simulation using the RB3LYP\6-31G(d) gas phase approximation. Using the "Atoms-in-Molecules" approach, we have computed charges on the biphenyl carbon atoms adjacent to chlorine; furthermore, absolute chemical hardness and global electrophilicity index have been determined for the studied chlorobiphenyls. The calculated descriptors have been correlated with experimentally determined reactivity of the biphenyls in the hard acid-hard base nucleophilic reactions. The higher reactivity of more chlorinated substrates has been confirmed
\\\\expert2\\nbo\\Russian Journal of General Chemistry\\2014, V. 84, N 3, p. 486–495.pdf
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4.

Вид документа : Статья из журнала
Шифр издания : 54/O-97
Автор(ы) : Frolova L. L., Popov A. V., Bezuglaya L. V., Slepukhin P. A., Kuchin A. V.
Заглавие : Oxidation of terpenoid diols with chlorine dioxide. Easy preparation of α-hydroxyketones [Электронный ресурс]
Место публикации : Russian Journal of General Chemistry. - 2014. - Vol.84, №5. - С. 853-859
Систем. требования: http://download.springer.com/static/pdf/247/art%253A10.1134%252FS1070363214050120.pdf?auth66=1408162021_62143127c58f3ed789851c5d51b6dc1a&ext=.pdf
Примечания : Bibliogr. : p. 859 (16 ref.). - 14.08.2014
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): chlorine dioxide --oxidation--selectivity
Аннотация: Oxidative dehydrogenation of vicinal diols of bornane and pinane type with chlorine dioxide in dimethylformamide has yielded α-hydroxyketones with high selectivity. 3α-Hydroxy-10β-pinane-4-one has been prepared for the first time with yield of 63-65%; the product structure has been confirmed by X-ray diffraction studies
\\\\expert2\\nbo\\Russian Journal of General Chemistry\\2014, V. 84, N 5, p. 853–859.pdf
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5.

Вид документа : Статья из журнала
Шифр издания : 54/S 98
Автор(ы) : Verbitskiy E. V., Cheprakova E. M., Slepukhin P. A., Kravchenko M. A., Skornyakov S. N., Rusinov G. L., Chupakhin O. N., Charushin V. N.
Заглавие : Synthesis of novel purin-6-yl conjugates with heterocyclic amines linked via 6-aminohexanoyl fragment [Электронный ресурс]
Место публикации : Mendeleev Communications. - 2015. - Vol. 25. - С. 412-414
Систем. требования: http://www.sciencedirect.com/science/article/pii/S0959943615002011
Примечания : Bibliogr. : p. 414 (30 ref.). - 20.01.2016
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): 2-aminopurine --purin-6-yl --heterocyclic amines
Аннотация: Novel conjugates of purine and 2-aminopurine linked with heterocyclic amines, including chiral derivatives of 3,4-dihydro- 2H-[1,4]benzoxazine, 3,4-dihydro-2H-[1,4]benzothiazine and 1,2,3,4-tetrahydroquinoline, by 6-aminohexanoyl fragment at the 6-position of purine moiety were obtained. For this purpose, replacement of the chlorine atom in 2-amino-6-chloropurine or 6-chloropurine by direct nucleophilic substitution reaction with 6-aminohexanamides or the coupling of 6-(purin-6-ylamino)-6- hexanoic acid with nitrogen heterocycles were used.
\\\\expert2\\nbo\\Mendeleev Communications\\2015, v.25, p. 412.pdf
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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gruzdev D.A., Telegina A. A., Ol’shevskaya V. A., Andronova V. L., Galegov G. A., Zarubaev V. V., Levit G. L., Krasnov V. P.
Заглавие : New nido-carborane-containing conjugates of purine: synthesis and antiviral activity
Место публикации : Russian chemical bulletin. - 2022. - Vol. 71, № 11. - С. 2375-2382
Предметные рубрики: ЗДРАВООХРАНЕНИЕ. МЕДИЦИНСКИЕ НАУКИ
ХИМИЧЕСКИЕ НАУКИ
Аннотация: New purine derivatives containing a nido-carborane fragment were synthesized by nucleophilic substitution of chlorine atom in 6-chloropurine and 2-amino-6-chloropurine under the action of nido-carborane-containing amines. Compounds with significant activity against the acyclovir-resistant strain of herpes simplex virus type 1, as well as with moderate activity against influenza viruses A and B, were discovered for the first time among the synthesized nido-carboranyl derivatives of purine.
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7.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Krasnov V. P., Musiyak V. V. , Levit G. L., Gruzdev D.A., Charushin V. N., Andronova V. L., Galegov G. A., Orshanskaya I. R., Sinegubova E. O., Zarubaev V. V.
Заглавие : Synthesis of pyrimidine conjugates with 4-(6-amino-hexanoyl)-7,8-difluoro-3,4-dihydro-3-methyl-2h-[1,4] benzoxazine and evaluation of their antiviral activity
Место публикации : Molecules. - 2022. - Vol. 27, № 13. - Ст.4236
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): pyrimidine
Аннотация: A series of pyrimidine conjugates containing a fragment of racemic 7,8-difluoro-3,4-dihydro-3-methyl-2H-[1,4]benzoxazine and its (S)-enantiomer attached via a 6-aminohexanoyl fragment were synthesized by the reaction of nucleophilic substitution of chlorine in various chloropyrimidines. The structures of the synthesized compounds were confirmed by 1H, 19F, and 13C NMR spectral data. Enantiomeric purity of optically active derivatives was confirmed by chiral HPLC. Antiviral evaluation of the synthesized compounds has shown that the replacement of purine with a pyrimidine fragment leads to a decrease in the anti-herpesvirus activity compared to the lead compound, purine conjugate. The studied compounds did not exhibit significant activity against influenza A (H1N1) virus.
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8.

Вид документа : Статья из журнала
Шифр издания : 54/R 30
Автор(ы) : Frolova L. L., Popov A. V., Bezuglaya L. V., Alekseev I.N., Slepukhin P. A., Kutchin A.V.
Заглавие : Reactions of Terpene Alcohols and Diols with Chlorine Dioxide in Dimethylformamide [Электронный ресурс]
Место публикации : Russian Journal of General Chemistry. - 2016. - Vol. 86, № 3. - С. 613-621
Систем. требования: http://download.springer.com/static/pdf/701/
Примечания : 03.11.16
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): one-pot synthesis --oxidation--ketones
Аннотация: The system chlorine dioxide-dimethylformamide in combination with or without a catalytic amount of MoCl5, CeCl3, ZrOCl2, or VO(acac)(2) induces oxidative chlorination of a number of bicyclic terpene alcohols and vicinal diols. 2 alpha-Chloropinan-3-one, 3 alpha-chloro-10 beta-pinan-4-one, 5 alpha-chloro-3 alpha-hydroxycaran-4-one, 5 beta-chloro-3 beta-hydroxycaran-4-one, and 4 alpha-chloro-2 alpha-hydroxypinan-3-one were thus synthesized in good preparative yields.
\\\\expert2\\NBO\\Russian Journal of General Chemistry\\2016, V. 86, N 3, p. 613-621.pdf
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9.

Вид документа : Статья из журнала
Шифр издания : Г/S 83
Автор(ы) : Musiyak V. V. , Nizova I. A., Chulakov E. N., Sadretdinova L. S., Tumashov A. A., Levit G. L., Krasnov V. P.
Заглавие : Stereochemical aspects in the synthesis of novel N-(purin-6-yl)dipeptides as potential antimycobacterial agents
Место публикации : Amino Acids. - 2021. - Vol. 53, № 3. - С. 407-415
ББК : Г
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): dipeptides--racemization--purine--coupling--nucleophilic substitution--antimycobacterial activity
Аннотация: The synthesis of purine conjugates with natural amino acids is one of the promising directions in search for novel therapeutic agents, including antimycobacterial agents. The purpose of this study was to synthesize N-(purin-6-yl)dipeptides containing the terminal fragment of (S)-glutamic acid. To obtain the target compounds, two synthetic routes were tested. The first of them is based on coupling of N-(purin-6-yl)-(S)-amino acids to dimethyl (S)-glutamate in the presence of carbodiimide coupling agent followed by the removal of ester groups. However, it turned out that this coupling process was accompanied by racemization of the chiral center of N-(purin-6-yl)-α-amino acids and in all cases led to mixtures of (S,S)- and (R,S)diastereomers (6:4). Individual (S,S)-diastereomers were obtained using an alternative approach based on the nucleophilic substitution of chlorine in 6-chloropurine or 2-amino-6-chloropurine with corresponding dipeptides as nucleophiles. The enantiomeric purity of the target compounds was confirmed by chiral HPLC. To test the assumption that racemization of the chiral center of N-(purin-6-yl)-α-amino acids occurs with the participation of nitrogen atoms of the imidazole ring via the stage of formation of a chirally labile intermediate, we obtained such structural analogs of N-(purin-6-yl)-(S)-alanine as N-(9-benzylpurin-6-yl)-(S)-alanine and N-(7-deazapurin-6-yl)-(S)-alanine. It was found that coupling of these compounds to dimethyl (S)-glutamate was also accompanied by racemization. This indicates that the imidazole fragment does not play a crucial role in this process. When testing the antimycobacterial activity of some of the obtained compounds, conjugates with moderate activity against the laboratory Mycobacterium tuberculosis H37Rv strain (MIC 3.1–6.25 μg/mL) were identified.
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10.

Вид документа : Статья из журнала
Шифр издания : 54/R 30
Автор(ы) : Gorbunova T. I., Zapevalov A. Ya., Saloutin V. I., Chupakhin O. N.
Заглавие : Reaction of dinitropolychlorobiphenyls with O- and N-nucleophiles as a new route of reprocessing polychlorobiphenyls [Electronic resource]
Место публикации : Russian Journal of Applied Chemistry. - 2002. - Vol. 75, № 3. - С. 449-451
Систем. требования: http://www.springerlink.com/content/3d3c9w2ygf2wwqe1/fulltext.pdf
Примечания : Bibliogr. : p. 451 (11 ref.). - 19.10.2011
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The reactivity of a mixture of dinitropolychlorobiphenyls in nucleophilic substitution of aromatic chlorine by polyethyleneoxy and amino groups was studied. New polychlorobiphenyl derivatives were obtained.
\\\\Expert2\\nbo\\Russian Journal of Applied Chemistry\\2002, v. 75, N. 3, p.449.pdf
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