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Betaines are formed in good yields in the reaction of N-heteroaromatic compounds with 2-dicyanomethyleneindane-1,3-dione oxide and its 4- and 5-halo derivatives in dioxane. The corresponding oxides were obtained by oxidation of 2-dicyanomethyleneindane-1,3-dione and its 4- and 5-substituted derivatives with hydrogen peroxide in dioxane. Data from the IR spectra of the compounds are presented.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 889–892, July, 1978. 相似文献
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O. Ya. Neiland B. Ya. Adamsone I. K. Raiskuma 《Chemistry of Heterocyclic Compounds》1992,28(8):941-944
The betaine of 2-amino-5-phenyliodonio(1H,5H)pyrimidine-4,6-dione, upon interaction with sodium diethyldithiocarbamate, forms the previously unknown 2-amino-5-diethylaminothiocarbonylthio (1H,5H)pyrimidine-4,6-dione, the cyclization of which in concentrated sulfuric acid leads to salts of 2-diethylimmonio-5-amino(6H)-1,3-dithiolo[4,5-d]pyrimidin-7-one — a new heterocyclic system. The salts serve as the starting material for obtaining 5-amino-7-oxo(6H)-1,3-dithiolo[4,5-d]pyrimidine-2-selenone and -2-thione.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 8, pp. 1117–1121, August, 1992. 相似文献
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A method for the synthesis of a new type of onium derivative of 1,3-indanedione — N,N-bis(1,3-indanedion-2-yl)imidazolium betaine — by anhydride condensation of N-(1,3-indanedion-2-yl)-N-carboxymethylimidazolium betaine with phthalic anhydride was developed. The new substance is an acid and forms stable salts.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 6, pp. 771–774, June, 1991. 相似文献
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Neiland O. Ya. Raiskuma I. K. Kampare R. B. Kampar V. É. 《Chemistry of Heterocyclic Compounds》1982,18(8):826-829
It was shown by spectroscopic methods that 2-N-imidazolyl-, 2-N-(N-methylimidazolyl)-, and 2-N-(N-methylpyrazolyl)-1,3-indandiones exist in the form of inner salts, whereas 2-N-pyrazolyl-1,3-indandione exists in the form of an enol with an intramolecular hydrogen bond.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 8, pp. 1082–1085, August, 1982. 相似文献
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