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E. A. Kaigorodova V. K. Vasilin M. M. Lipunov V. E. Zavodnik G. D. Krapivin 《Chemistry of Heterocyclic Compounds》2004,40(12):1600-1608
Iminophosphoranes containing a thieno[2,3-b]pyridine fragment were obtained through a sequence of reactions: 1) alkylation of 3-cyano-2(1H)-pyridinethiones in alkaline medium by an -halocarbonyl compound with subsequent Thorpe-Ziegler cyclization of the resultant 2-thioalkylpyridines to give 3-aminothieno[2,3-b]pyridines, 2) diazotization of the amino group and nucleophilic substitution of the diazonium group by an azido group without isolation of the diazonium salts, and 3) reaction of the 3-azidothieno[2,3-b]pyridines with triphenylphosphine.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 12, pp. 1853–1862, December, 2004. 相似文献
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T. E. Khoshtariya M. M. Matnadze N. T. Mirziashvili L. N. Kurkovskaya M. I. Sikharulidze T. O. Dzhashi 《Chemistry of Heterocyclic Compounds》2004,40(11):1454-1459
The Sandmeyer reaction was used to prepare 2,3-dioxo-2,3-dihydrobenzo[b]furoindoles which could be reduced with diborane or with complex hydrides to give the corresponding unsubstituted as well as the 3-hydroxybenzo[b]furoindoles.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No 11, pp. 1683–1689, November, 2004. 相似文献
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E. G. Paronikian Sh. F. Akopian A. S. Noravian 《Chemistry of Heterocyclic Compounds》2008,44(8):1003-1008
A new methods have been developed for the synthesis of condensed pyrido[2,3-b]thieno[3,2-d]pyrimidines based on cyclic derivatives
of 4-cyanopyridine-3-thiones. The presence of two different reactive functional groups NH2 and CONH gives the possibility of carrying out different conversions of thieno[2,3-b]pyridines.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 8, 1245–1252, August, 2008. 相似文献
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O. B. Ryabova M. I. Evstratova V. A. Makarov V. A. Tafeenko V. G. Granik 《Chemistry of Heterocyclic Compounds》2004,40(10):1352-1358
The reaction of 5-formyl-4-thiocyanatopyrimidines with nitromethane was studied under various conditions. The reaction was found unexpectedly to proceed with closure of a thiophene ring to give thieno[2,3-d]pyrimidines. The use of ammonium acetate as the catalyst leads to a side reaction involving closure of an isothiazole ring to give isothiazolo[5,4-d]pyrimidines. X-ray diffraction crystallographic analysis was used to confirm the structure of thieno[2,3-d]pyrimidine.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1564–1571, October, 2004. 相似文献
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We have developed a method of synthesis of benzo[5,6]indolizino[2,1-b]quinolinium-13-thiolates and 5,6-dihydrobenzo[5,6]indolizino[1,2-c]quinoline-6-thiones
based on the reaction of the corresponding 1′, 2′-dialkyl-1′,2′-dihydro-2,3′-biquinolines and 1′,4′-dialkyl-1′,4′-dihydro-2,3′-biquinolines
with sulfur in DMF.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 6, pp. 849–851, June, 2007. 相似文献
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V. Z. Shirinian M. M. Krayushkin D. M. Nikalin A. A. Shimkin 《Russian Chemical Bulletin》2005,54(3):738-742
The reaction of alkyl 4-(2-acetylhydrazino)-2-methyl-3-thiophenecarboxylates with 3-methylbutan-2-one was carried out under the Fischer reaction conditions. The influence of Lewis acids and solvents on the process was studied. A convenient method for the synthesis of thieno [3.2-b]pyrrolenine derivatives was proposed.__________Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 3, pp. 725–729, March, 2005. 相似文献
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M. M. Krayushkin M. A. Kalik D. V. Kozhinov A. Yu. Martynkin Yu. P. Strokach V. A. Barachevsky 《Chemistry of Heterocyclic Compounds》2005,41(3):312-316
1,2-Bis{5-(2-benzothiazolyl)-2-ethylthieno[2,3-b]thiophen-3-yl}hexafluorocyclopentene has been synthesized for the first time. It was shown that, unlike analogous derivatives of thieno[3,2-b]thiophene, on irradiation with UV light (λ = 313 nm) it did not display photochromic properties, but undergoes an irreversible photoconversion which is accompanied by the display of intense fluorescence. This raises the prospect of using this compound for creating an irreversible photoluminescent recording medium.Dedicated to V. I. Minkin on his 70th birthday.__________Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 3, pp. 360–364, March, 2005.For Part 20 see [1]. 相似文献
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M. A. Metwally H. A. Etman H. E. Gafer A. M. Khalil 《Chemistry of Heterocyclic Compounds》2008,44(6):715-721
3-Amino-4,6-dimethylpyrazolo[3,4-b]pyridine was used for the preparation of some novel heterocycles of pharmaceutical interest.
The starting material reacted with 2-cyano-3,3-bis(methylthio)acrylate, chloroacetyl chloride, phenyl isothiocyanate, carbon
disul-fide, and aromatic aldehydes to give the novel heterocycles. The structures of the hitherto unknown ring systems have
been confirmed by analytical and spectral methods.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 6, pp. 891–898, June, 2008. 相似文献
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We have obtained 5-(2-pyridyl)[1,3]dithiolo[4,5-b][1,4]dithiine-2-thione for the first time by cycloaddition of 2-ethynylpyridine to 4,5-dihydro-1,3-dithioltrithione (isotrithionedithiol). We have studied this thione, 5-(2-pyridyl)- and 5-(4-pyridyl)-5,6-dihydro[1,3]dithiolo[4,5-b][1,4]dithiine-2-thiones by mass spectroscopy and also IR, UV, 1H and 13C NMR spectra. We have determined the crystal and molecular structure of 5-(2-pyridyl)-5,6-dihydro[1,3]dithiolo[4,5-b][1,4]dithiine-2-thione.__________Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 3, pp. 429–434, March, 2005. 相似文献
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A. E. Shchekotikhin Yu. N. Lusikov V. N. Buyanov M. N. Preobrazhenskaya 《Chemistry of Heterocyclic Compounds》2007,43(4):439-444
Condensation of 2-formyl-or 2-cyano-3-chloro-1,4-dimethoxyanthraquinone with methyl thioglycolate in the presence of base
gave methyl 4,11-dimethoxyanthra[2,3-b]thiophene-5,10-dione-2-carboxylate and its 3-amino derivative respectively. Hydrolysis
of the ester group in methyl 4,11-dimethoxyanthra[2,3-b]thiophene-5,10-dione-2-carboxylate and subsequent decarboxylation
of the carboxylic acid formed gave 4,11-dimethoxyanthra[2,3-b]thiophene-5,10-dione. Condensation of 3-chloro-2-formyl-1,4-dimethoxyanthraquinone
with ammonia in the presence of sulfur gave 4,11-dimethoxyanthra[2,3-d]isothiazole-5,10-dione
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 4, pp. 538–543, April, 2007. 相似文献
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M. V. Vovk N. V. Mel’nichenko V. A. Sukach N. G. Chubaruk 《Chemistry of Heterocyclic Compounds》2004,40(11):1485-1489
6-Azido-1H-pyrazolo[3,4-b]pyridino-5-carbaldehydes react with aromatic amines to give the corresponding N-arylimines which cyclize on heating in boiling toluene to give 6-aryl-1,6-dihydrodipyrazolo[3,4-b:4,3-e]pyridines.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 11, 1717–1722, November, 2004. 相似文献
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L. M. Potikha R. M. Gutsul A. V. Turov V. A. Kovtunenko 《Chemistry of Heterocyclic Compounds》2008,44(2):208-213
Condensation of 2-(cyanomethyl)benzoic acid with 2-aminobenzylamine gave 6,11-dihydro-13H-isoquino[3,2-b]quinazolin-11-one.
Its oxidation in nitrobenzene led to the formation of 5,13,5′,13′-hexahydro[6,6′]bi[isoquino[3,2-b]quinazoline]-11,11′-dione,
but in dichlorobenzene in the presence of elemental sulfur and iodine it gave the rearrangement product 6H-dibenzo[b,f][1,8]naphthyridin-5-one.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No.2, 273–279, February, 2008. 相似文献
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Interaction of 6,11-dihydro-13H-isoquino[2,3-b]quinazolin-13-one with alkylating agents occurs at two positions depending
on their nature and the reaction conditions-at C(6) or N(5). Fusion with methyl tosylate leads to 5-methyl-13-oxo-6,13-dihydro-11H-isoquino[3,2-b]quinazolin-5-ium salts, while interaction
with benzyl halides in the presence of i-PrONa gave 6-benzyl-and 6,6-dibenzyl-6,11-dihydro-13H-isoquino[3,2-b]quinazolin-13-ones.
Alkylation with olefins led to two types of products. In the case of maleinimides and maleic acid anhydride Michael adducts
at C(6) were formed and in the case of cyanocinnamic acid esters the reaction was accompanied by intramolecular acylation at N(5) to give 1-aryl-3,9-dioxo-3H,9H,11H-benzo[5,6][1,8]naphthyridino[1,8-ab]quinazoline-2-carbonitrile.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No.11, 1698–1708, November 2007. 相似文献
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