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1.
B. S. Fedorov N. I. Golovina V. V. Arakcheeva L. S. Barinova R. F. Trofimova P. V. Galkin L. O. Atovmyan 《Russian Chemical Bulletin》1992,41(3):522-527
1,4-Dichloro- (1) and 1,4-dibromo-1,1,4,4-tetranitrobutane-2,3-diol dinitrates (2) were synthesized by nitration of the corresponding diols with a mixture of trifluoroacetic anhydride and nitric acid. The x-ray diffraction investigations of 1 and 2 that have been carried out showed the influence of the intramolecular interactions of the nitro and nitrate groups on the packing of the molecules in the crystal.Institute of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka. Translated from Izvestiya Akademii Nauk, Seriya Khimicheskaya, No. 3, pp. 664–671, March, 1992. 相似文献
2.
B. S. Fedorov N. I. Golovina V. V. Arakcheeva G. V. Shilov L. O. Atovmyan 《Russian Chemical Bulletin》1992,41(3):528-530
A two-step synthesis has been proposed to obtain 1,12-difluoro-1,1,3,5,5,8,8,10,12,12-decanitro-3,10-diazadodecane-6,7-diol dinitrate, starting from 1,1,4,4-tetranitrobutane-2,3-diol and N-(methoxymethyl)-2-fluoro-2,2-dinitroethyl-amine, followed by nitration of the Mannich base formed. An x-ray-diffraction investigation of the dinitrate obtained was carried out.Insitute of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka. Translated from Izvestiya Akademii Nauk, Seriya Khimicheskaya, No. 3, pp. 671–675, March, 1992. 相似文献
3.
B. S. Fedorov N. I. Golovina L. S. Barinova V. V. Arakcheeva R. F. Trofimova L. O. Atovmyan 《Russian Chemical Bulletin》1991,40(10):2081-2088
The bromination of 1,1,4,4-tetranitrobutane-2,3-diol in 60% acetic acid gave 1,4-dibromo-1,1,4,4-tetranitrobutane-2,3-diol in satisfactory yield. The chlorination of 1,1,4,4-tetranitrobutane-2,3-diol under analogous conditions gave 1,4-dichloro-1,1,4,4-tetranitrobutane-2,3-diol as a crystal hydrate. Drying of this latter product in vacuum over phosphorus pentoxide gave 1,4-dichloro-1,1, 4,4-tetranitrobutane-2,3-diol in quantitative yield. The structures of these products were determined by x-ray diffraction structural analysis. The crystal chemical analysis and quantum chemical calculations established an increase in secondary oxygen-halogen interactions in the halodinitromethyl fragment with increasing atomic number of the halogen atom.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 10, pp. 2372–2380, October, 1991. 相似文献
4.
B. S. Fedorov N. I. Golovina L. S. Barinova R. F. Trofimova V. V. Arakcheeva L. O. Atovmyan 《Russian Chemical Bulletin》1991,40(4):728-732
The synthesis of 1,1,4,4-tetranitrobutane-2,3-diol has been carried out via the reaction of the dinitromethane potassium salt with glyoxal, at pH values of 7–8 after reagent mixing and 5.5 at the end of the reaction, in the temperature range 35–37°C. X-ray crystal structure analysis has been performed on 1,1,4,4-tetranitrobutane-2,3-diol and its diacetate. The conformations of these molecules are stabilized to a significant extent by O–...N+-type electrostatic interaction, which was confirmed by quantum-mechanical calculations on 2,2-dinitroethanol as a model molecule.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 830–834, April, 1991. 相似文献
5.
The amination reactions of butane-1,4-diol and ethane-1,2-diol on seven different catalysts obtained by modifying a natural alumosilicate — gumbrin — and a natural zeolite — analcite -with iron and chromium salts, and also by activation with sulfuric acid, have been investigated. The maximum yield of pyrrolidine was obtained in the presence of a catalyst containing ferric oxide on gumbrin.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 937–941, July, 1973. 相似文献
6.
Z. G. Aliev N. Yu. Lisovenko L. O. Atovmyan A. N. Maslivetz 《Journal of Structural Chemistry》2004,45(3):527-531
The interaction of 5-aryl-4-quinoxaline-2,3-dihydro-2,3-furandiones with mesitylamine and methyl(phenyl) hydrazine results in the formation of 1-substituted 5-aryl-4-quinoxalinyl-2,3-dihydro-2,3-pyrrolediones. The crystal and molecular structure of the 1-mesityl-5-phenyl derivative was investigated by X-ray diffraction.Original Russian Text Copyright © 2004 by Z. G. Aliev, N. Yu. Lisovenko, L. O. Atovmyan, and A. N. MaslivetzTranslated from Zhurnal Strukturnoi Khimii, Vol. 45, No. 3, pp. 553–557, May–June 2004. 相似文献
7.
The oxidation of butane 2,3-, propane 1,2-, ethane diol and 2-methoxy ethanol in aqueous alkaline medium by Os(VIII) has been studied. The reaction is base catalyzed and shows first-order kinetics in Os(VIII), whereas the order is less than 1 in butane 2,3-diol [BD]. The rate of oxidation is BD > propane 1,2 > ethane diol ≈ 2-methoxy ethanol. The change in ionic strength has no effect on the rate of reaction. Activation parameters ΔE, PZ, and ΔS* have been evaluated. 相似文献
8.
B. A. Arbuzov E. N. Klimovitskii M. B. Timirbaev 《Chemistry of Heterocyclic Compounds》1980,16(1):14-16
cis-2,3-Dichloro-2-butene-1,4-diol was obtained by reduction of dichloromaleic anhydride with lithium aluminum hydride. Condensation of the diol with carbonyl compounds leads to seven-membered unsaturated acetals, viz., 5,6-dichloro-1,3-dioxa-5-cycloheptenes.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 1, pp. 19–21, January, 1980. 相似文献
9.
Vasil"ev A. A. Vielhauer O. Engman L. Pietzsch M. Serebryakov E. P. 《Russian Chemical Bulletin》2002,51(3):481-487
Acylation of meso-2,3-dimethylbutane-1,4-diol with vinyl acetate in the presence of porcine pancreatic lipase (PPL) leads to the dextrorotatory monoacetate of the above diol with enatiomeric excess (ee) 58—64%. Absolute configuration of this scalemic specimen was determined by its sequential transformation to levorotatory lasiol, a metabolite of the Lasius ants. Partial hydrolysis of the corresponding meso-diacetate, mediated by PPL or by the Pseudomonas sp. lipase affords the monoacetate of opposite configuration with ee 72—86%, a formal intermediate in the synthesis of (3S,4R)-faranal. Other microbial lipases used are distinctive in low chemoselectivity. 相似文献
10.
Z. G. Aliev A. N. Maslivets O. L. Simonchik T. G. Konyukhova Yu. S. Andreichikov L. O. Atovmyan 《Russian Chemical Bulletin》1995,44(8):1496-1498
1-Unsubstituted 4,5-diphenyl-2,3-dihydro-2,3-pyrroledione interacts with ethoxycarbonyl-methylenetriphenylphosphorane regioselectively to give 4,5-diphenyl-Z-2-ethoxycarbonyl-methylene-2,3-dihydro-3-pyrrolone. The crystal and molecular structure of the latter was studied by X-ray analysis.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 8, pp. 1556–1558, August, 1995. 相似文献
11.
Paolo Manitto Giovanna Speranza Gabriele Fontana Antonietta Galli 《Helvetica chimica acta》1998,81(11):2005-2016
The transformation of meso-butane-2,3-diol into butan-2-ol by a strain of Lactobacillus brevis occurs through a diol-dehydratase-catalyzed conversion of the diol into butan-2-one, which is then reduced to the secondary alcohol by dehydrogenases. Experiments performed with deuterated meso-butane-2,3-diols showed that the dehydration reaction brings about an inversion of configuration at the (R)-configured C-atom of meso-butane-2,3-diol as a consequence of the substitution of the OH group by a H-atom; at the same time, the H-atom already bound to the (R) C-atom is retained in the resulting methylene group. The H-atom replacing the OH group was assessed to come from the medium since the H-atom at the (S)-configured C-atom was completely lost. By contrast, in the case of the conversion of (RS)-propane-1,2-diol into propan-1-ol under the same fermentation conditions, an extensive H-transfer (ca. 80%) from the primary-alcohol function to the adjacent C-atom was observed. This fact is taken as an indication of different modes in which the two substrates are processed by the enzyme (despite the same stereochemical outcome). A speculative hypothesis is presented to interpret such a dissimilarity. 相似文献
12.
Soad Abdel Meguid Osman Galal Eldin Hamza Elgemeie Galal Abdel Moein Nawar Mohamed Hilmy Elnagdi 《Monatshefte für Chemie / Chemical Monthly》1986,117(1):105-110
A variety of new 6-thiophen-2-yl and 6-furan-2-ylthiazolo[2,3—a]pyridine derivatives could be prepared via the reaction of 2-functionally substituted methyl-2-thiazolin-4-one with cyanomethylenethiophen-2-yl and cyanomethylenefuran-2-yl derivatives. The structure of the reaction products was established based on spectral data.
Aktivierte Nitrile in der Heterocyclen-Synthese: Die Synthese von 6-Thiophen-2-yl-und 6-Furan-2-yl-thiazolo[2,3—a]pyridin-Derivaten
Zusammenfassung Es konnte eine Reihe neuer 6-Thiophen-2-yl- und 6-Furan-2-yl-thiazolo-[2,3—a]pyridine über die Reaktion von 2-funktionell-substituierten Methyl-2-thiazolin-4-onen mit Cyanomethylenthiphen-2-yl bzw. Cyanomethylenfuran-2-yl-Derivaten hergestellt werden. Die Struktur der Reaktionsprodukte wurde mit spektroskopischen Methoden ermittelt.相似文献
13.
14.
Katalin Csukonyi János Lázár Gábor Bernáth István Hermecz Zoltán Mészáros 《Monatshefte für Chemie / Chemical Monthly》1986,117(11):1295-1303
The following tetracyclic ring systems and their derivatives have been synthesized for pharmacological investigations: Trimethylenethieno[2,3—d]dihydropyrrolo[1,2—a]pyrimidin-4-one and -4-thione (1 a, 5 a); Tetramethylenethieno[2,3—d]dihydropyrrolo[1,2—a]pyrimidin-4-one and -4-thione (1 b, 1 j, 5 b); Pentamethylenethieno[2,3—d]dihydropyrrolo[1,2—a]pyrimidin-4-one and-4-thione (1 c, 5 c); Trimethylenethieno[2,3—d]tetrahydropyrido[1,2—a]pyrimidin-4-one and -4-thione (1 d, 5 d); Tetramethylenethieno[2,3—d]tetrahydropyrido[1,2,—a]pyrimidin-4-one and -4-thione (1 e, 5 e); Pentamethylenethieno[2,3—d]tetrahydropyrido[1,2—a]pyrimidin-4-one and -4-thione (1 f, 5 f); Trimethylenethieno[2,3—d]tetrahydroazepino[1,2—a]pyrimidin-4-one and -4-thione (1 g, 5 g); Tetramethylenethieno[2,3—d]tetrahydroazepino[1,2—a]pyrimidin-4-on and -4-thione (1 h, 5 h); Pentamethylenethieno[2,3—d]tetrahydroazepino[1,2—a]pyrimidin-4-one and -4-thione (1 i, 5 i); Tentamethylenethieno[2,3—d]tetrahydroazepino[1,2—a]pyrimidin-4-one (7 b); Pentamethylenethieno-[2,3—d]tetrahydropyrido[1,2—a]pyrimidin-4-one (7 c).Compounds1 a–i were synthesized from 2-amino-3-ethoxycarbonyl-4,5-polymethylenethiophene2 a–c with the corresponding lactim ethers (3 a–c) in chlorobenzene in the presence of polyphosphoric acid (PPA). Compounds7 b and7 c were obtained in the reaction of -amino acid esters2 b and2 c with 2-bromopyridine (6). The thione derivatives (5 a–i) were prepared from compounds1 a–i with phosphorus(V) sulphide.Part 74:Szabó J, Fodor L, Szcs E, Bernáth G, Sohár P (1984) Pharmazie 39: 347. 相似文献
15.
Khisamutdinov G. Kh. Karpychev Yu. V. Zhbanova Yu. S. Kondyukov I. Z. Kashaev V. A. Il´in V. P. 《Russian Chemical Bulletin》2015,64(8):1967-1970
Known methods for the synthesis of 2,3-bis(nitroxymethyl)-2,3-dinitrobutane-1,4-diol dinitrate and its intermediates were investigated. New procedures were developed for the preparation of these compounds. 2,3-Bis(nitroxymethyl)-2,3-dinitrobutane-1,4-diol dinitrate was studied by X-ray diffraction.
相似文献16.
B. S. Fedorov N. L. Gotovina V. V. Arakcheeva R. F. Trofimova L. O. Atovmyan 《Russian Chemical Bulletin》1996,45(5):1157-1161
A novel reaction of the sodium salt of 2-nitroethanol in aqueous ammonia resulted in the sodium salt of 2-oxo-3-hydroxypropionic acid oxime (1) has been found. Bromination of1 affords 2-bromo-2-nitropropane-1,3-diol (2) with a previously unknown molecular conformation. The formation mechanisms of compounds1 and2 were suggested. X-ray analysis of products1,2 and that of the model compound, 2,2-dinitropropane-1,3-diol, was performed.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 5, pp. 1217–1221, May, 1996. 相似文献
17.
N. N. Smirnova K. V. Kandeev T. A. Bykova T. G. Kulagina A. M. Fainleib 《Russian Chemical Bulletin》2006,55(5):845-851
The temperature dependences of the heat capacity of partially crystalline linear polyurethanes based on 1,6-hexamethylenediisocyanate
with butane-1,4-diol and hexane-1,6-diol were studied for the first time in a temperature range of 6–460 K by the methods
of adiabatic vacuum and dynamic calorimetry. Physical changes in the state of polyurethanes were revealed and characterized;
the standard thermodynamic functions, namely, C
p
°(T), H°(T)-H°(0), S°(T), and G°(T)-H°(0), were calculated from the obtained experimental data in the temperature range from T → 0 to 460 K for the polymers in the crystalline, glassy, highly elastic, and liquid states. The energies of combustion of
the polymers were measured by the bomb calorimetry method, and the standard thermodynamic characteristics of their formation
at 298.15 K were calculated. The thermodynamic characteristics of bulk polycondensation of 1,6-hexamethylenediisocyanate with
butane-1,4-diol and hexane-1,6-diol to form linear aliphatic polyurethanes-{4,6} and-{6,6} were determined in the range from
T → 0 to 350 K at p° = 0.1 MPa. The thermodynamic properties of the polyurethanes under study and polymers of isomeric structure were compared.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 5, pp. 817–823, May, 2006. 相似文献
18.
A new anti-inflammatory active phenylpropenoid, (R,E)-1-[4-(3-hydroxyprop-1-enyl) phenoxyl]-3-methylbutane-2,3-diol (1), isolated from the stem wood of Zanthoxylum integrifoliolum, has been synthesized for the first time using commercially available 4-hydroxy benzaldehyde (2). The key step involves the Sharpless asymmetric dihydroxylation of olefin (3).
19.
N. M. Igidov E. N. Kozminykh G. A. Shavkunova V. O. Kozminykh E. S. Berezina 《Russian Chemical Bulletin》1995,44(2):322-325
Diphenylketene undergoes regioselective thermal [2+2]-cycloaddition to the heterocyclic C(3)=O carbonyl group of 5-aryl-2-methoxycarbonylmethylene-2,3-dihydrofuran-3-ones and 5-phenyl-2,3-dihydrofuran-2,3-dione to give the corresponding 3-diphenylmethylene derivatives of 2,3-dihydrofuran.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2, pp. 331–334, February, 1995. 相似文献
20.
《Tetrahedron: Asymmetry》2014,25(6-7):503-506
A new method for preparing (2R,3R)-1,4-dimethoxy-1,1,4,4-tetraphenylbutane-2,3-diol in high yield based on selective 2,3-spiroboration of (2R,3R)-1,1,4,4-tetraphenylbutanetetraol has been developed. It avoids traditional oxidation and reduction steps, and provides a simplified, more straightforward, and high-yielding synthesis of the title compound. 相似文献