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V. O. Koz'minykh E. N. Koz'minykh Yu. S. Andreichikov 《Chemistry of Heterocyclic Compounds》1989,25(8):862-865
Reaction of 5-aryl-4-halo-2,3-dihydrofuran-2,3-diones with alkoxycarbonylmethylenetriphenylphosphoranes has given 2-alkoxycarbonylmethylene-5-aryl-4-halo-2, 3-dihydrofuran-3-ones, which readily add halogens at the 2-exocyclic double bond, and on reaction with arylamines recyclize to give 2-hydroxy-2, 3-dihydropyrrol-3-ones.For Communication 1, see [1].Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 8, pp. 1034–1038, August, 1989. 相似文献
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N. B. Chernysheva A. A. Bogolyubov V. V. Semenov 《Chemistry of Heterocyclic Compounds》2003,39(8):1057-1064
The structure of the products of the reaction of 4-methylene-1,3-dioxolan-2-ones with hydrazines is a function of the structure of the starting hydrazine. 1,3,4-Oxadiazin-2-one derivatives are obtained from hydrazine hydrate. 3-Arylaminooxazolidin-2-ones are obtained from monoarylhydrazines, while mixtures of these derivatives are obtained from aliphatic monoalkylhydrazines. 相似文献
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Z. G. Aliev L. O. Atovmyan V. O. Koz'minykh Yu. S. Andreichikov 《Russian Chemical Bulletin》1992,41(3):488-490
The crystal and molecular structures of 2-methoxycarbonylmethylene-5-phenyl-2,3-dihydrofuran-3-one have been analyzed by x-ray crystallography. The solid-phase photodimerization of this compound has been found to be topochemical in nature.For previous communication, see [1].Institute of Chemical Physics, Russian Academy of Sciences, Chernogolovka 142432. Translated from Izvestiya Akademii Nauk, Seriya Khimicheskaya, No. 3, pp. 620–624, March, 1992. 相似文献
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Tretyakov N. A. Shavrina T. V. Maslivets A. N. 《Russian Journal of Organic Chemistry》2019,55(5):719-720
Russian Journal of Organic Chemistry - 8-Aroyl-3,4-dihydropyrrolo[2,1-a][1,4]oxazine-1,6,7(1H)-triones were synthesized by the reactions of 3-(2-aryl-2-oxoethylidene)morpholin-2-ones with oxalyl... 相似文献
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S. N. Shurov L. I. Livantsova E. Yu. Pavlova G. S. Zaitseva Yu. S. Andreichikov O. N. Kolesnikova V. G. Baklykov 《Chemistry of Heterocyclic Compounds》1991,27(11):1267-1267
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 11, p. 1567, November, 1991. 相似文献
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Yu. S. Andreichikov D. D. Nekrasov I. V. Krylova V. I. Bachurina 《Chemistry of Heterocyclic Compounds》1992,28(11):1245-1248
The reaction of 5-aryl-2,3-dihydrofuran-2,3-diones (I) with thiocarbonyl compounds has been described only for thiourea. The products of this reaction are 3-aryl-5-phenacylidene-4-oxoimidazolidine-2-thiones [2]. It seemed of interest to study the conversion of the furandiones (I) with a wider range of thiocarbonyl compounds such as thioamides and thiosemicarbazides.For Communication 27 see [1].Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 11, pp. 1461–1464, November, 1992. 相似文献
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Michael M. Dejmek Rüdiger Selke 《Angewandte Chemie (International ed. in English)》1998,37(11):1540-1542
Copper complexes with distorted tetrahedral structure in solution catalyze regioselectively the cyclization of 1,2-bisketenes with alcohols to give 5-alkoxy-2,3-dihydrofuran-2-ones in very high yields (shown on the right). It seems remarkable that these new compounds could remain undiscovered despite having structural similarities with a great number of well-investigated and biologically active butenolides. 相似文献
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Russian Journal of Organic Chemistry - The reaction of 2-imino-2,5-dihydrofuran-3-carboxamides with benzaldehyde in pentan-1-ol in the presence of piperidine gave new dihydrofuran derivatives with... 相似文献
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V. P. Kruglenko V. P. Gnidets N. A. Klyuev M. V. Povstyanoi 《Chemistry of Heterocyclic Compounds》1987,23(4):444-446
The reaction of 1,2-diaminobenzimidazole with 5-phenyl-2,3-dihydrofuran-2,3-dione in acetic acid gave a mixture of 2-benzoylmethyl-1,2,4-triazino [2,3-a]-benzimidazol-4H-3-one and 3-benzoylmethyl-1,2,4-triazino[2,3-a]benzimidazol-1H-2-one, the intramolecular cyclization of which gave isomeric 2-phenylfuro-[5,4-e]- and 2-phenylfuro[4,5-e]-1,2,4-triazino[2,3-a]benzimidazoles. Only the corresponding furo[4,5-e]-1,2,4-triazino[2,3-a]benzimidazole was isolated when the reaction was carried out in sulfuric acid.See [1] for Communication 14.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 4, pp. 533–535, April, 1987. 相似文献
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A. A. Bogolyubov N. B. Chernysheva V. V. Nesterov M. Yu. Antipin V. V. Semenov 《Chemistry of Heterocyclic Compounds》2003,39(8):1065-1071
X-ray diffraction structural analysis was used to show the structure of one of the two products of the reaction of benzylhydrazine with 4,4-dimethyl-5-methylene-1,3-dioxolan-2-one and of the only product of the reaction of phenylhydrazine with the same dioxolanone. Both compounds are derivatives of 3-amino-4-hydroxyoxazolidin-2-one. 相似文献
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羰基化合物的光解一直是分子反应动力学研究感兴趣的课题之一,近年来许多研究小组用不同的实验方法对气相羰基化合物特别是丙酮分子的紫外光解进行了广泛的研究[14],然而对一个分子中含有两个羰基的二酮类分子却很少研究.早期对(ClCO)2和(CH3CO)2的光解反应研究主要集中在液相宏观动力学方面[5-7],这些研究都没有在分子的层次上进行考察,因此对它们的紫外光解机理并不清楚,例如两者光解首先发生的是Cl或CH3基的脱落,还是分子中央的C-C键断裂?光解后剩余的自由基第二步解离是光解还是热解?光解后碎片的能量分布如何?等等.为此… 相似文献
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Published data on the synthesis, structure, and chemical properties of N-substituted 2(3)-imino-2,3-dihydrofuran-3(2)-ones to 2002 are reviewed 相似文献
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Yu. S. Andreichikov D. D. Nekrasov M. A. Rudenko Yu. A. Nalimova 《Chemistry of Heterocyclic Compounds》1988,24(10):1172-1174
3-Aryl-5-phenacylideneimidazolidine-2,4-diones, 3-aryl-5-phenacylidene-4-oxoimidazolidine-2-thiones, and 5-phenacylidene-4-oxoimidazolidine-2-selenones were obtained from 5-aryl-2,3-dihydrofuran-2,3-diones and arylureas, arylthioureas, and selenoureas respectively in glacial acetic acid. In the reaction of 5-aryl-2,3-dihydrofuran-2,3-diones with cyanoguanidine in 98% acetic acid 5-phenacylideneimidazolidine-2,4-diones were isolated, and in anhydrous acetic acid 2-imino-3-amidino-5-phenacylidene-4-oxazolidones were isolated. When heated in a water-dioxane solution of hydrochloric acid, the latter are converted into 5-phenacylideneimidazolidine-2, 4-diones.For Communication 9, see [1].Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1411–1413, October, 1988. 相似文献
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A. A. Bogolyubov N. B. Chernysheva V. V. Nesterov M. Yu. Antipin V. V. Semenov 《Chemistry of Heterocyclic Compounds》2004,40(8):992-1001
The composition and yields of the products from the reaction of 4,4-dialkyl-5-methylene-1,3-dioxolan-2-ones with amidines depend on the structure of the initial amidine and on the reaction conditions. 2-Aminopyridines lead to 3-substituted 4-hydroxy-4-methyloxazolidin-2-ones and 4-methylene-oxazolidin-2-ones and also to sym-carbamides. 2-Amino-4,6-dimethylpyrimidine leads to the corresponding 4-methyleneoxazolidin-2-one. 3-Aminothiazoles give linear oxourethanes and sym-carbamides. 相似文献
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Yu. S. Andreichikov D. D. Nekrasov M. A. Rudenko A. Yu. Konovalov 《Chemistry of Heterocyclic Compounds》1987,23(6):610-613
On reaction of 5-aryl-2,3-dihydrofuran-2,3-diones with -aminoisobutyronitrile, o-aminobenzonitrile, and -anilinopropiononitrile, we obtained aroylpyruvic acid N-(1-methyl-1-cyanoethyl)-, N-(o-cyanophenyl)-, and N-phenyl-N-(cyanoethyl)-amides, respectively. On reaction of 5-aryl-2,3-dihydrofuran-2,3-diones with cyanoacetamide we obtained aroylacetic acid N-(cyanoacetyl)amides, while in the case of methyleneaminoacetonitrile and p-dimethylaminobenzonitrile we obtained (6-aryl-4-oxo-2,3-dihydro-1,3-oxazin-3-yl)acetonitriles and 2-(p-dimethylaminophenyl)-6-aryl-1,3-oxazine-4-ones, respectively.For Communication 2, see [1].Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 6, pp. 740–743, June, 1987. 相似文献