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Ivanova N. A. Shainurova A. M. Khusainova A. A. Shitikova O. V. Akhmetvaleev R. R. Miftakhov M. S. 《Russian Journal of Organic Chemistry》2002,38(4):491-493
By reaction of 6,7-dichloro-1,4-dioxaspiro[4.4]non-6-en-8-one with NaI and LiBr in boiling acetylacetone or methyl butyl ketone the corresponding 3-iodo and 3-bromo derivatives of cyclopentenone were prepared. 相似文献
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分别用K2CO3,1,5-二氮双环(4.3.0)壬-5-烯(DBN)和四丁基氟化铵(TBAF)等碱催化3-(3-羟基丙基)-γ-丁烯酸内酯的分子内Micheal加成反应合成了2-取代-1,7-二氧螺(4.4)壬-8-酮 相似文献
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In connection with another problem, we required authentic samples of 8-methylsiro[4.5]dec-7-en-6-one (1) and 6-methyl-spire[4.5]dec-6-en-8-one (2). The former compound is not reported in the literature. Although there are two reports of the latter material,1,2 the physical data ascribed to it do not agree. In this communication, we report the synthesis and characterization of the two isomers. 相似文献
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S. V. Fedoseev O. V. Ershov M. Yu. Belikov V. A. Tafeenko 《Russian Journal of Organic Chemistry》2016,52(8):1143-1147
Reaction of 3-amino-8-hydroxy-1,6-dioxo-2,7-diazaspiro[4.4]non-3-en-4-carbonitriles with amines in 2-propanol at room temperature provided the corresponding ammonium salts of 3-amino-8-hydroxy-1,6-dioxo-4-cyano-2,7-diazaspiro[4.4]non-3-en-2-ides. 相似文献
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Russian Journal of Organic Chemistry - Epimeric mono- and bis-sulfoxides synthesized by oxidation of 8-methyl-5-(methylsulfanylmethyl)-3-thiabicyclo[3.3.1]non-7-en-6-one were separated by silica... 相似文献
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L. A. Baeva A. D. Ulendeeva A. A. Fatykhov N. K. Lyapina 《Russian Journal of Organic Chemistry》2010,46(7):1066-1069
The reduction of 8-methyl-5-methylsulfanylmethyl-3-thiabicyclo[3.3.1]non-7-en-6-one with aluminum hydride, lithium tetrahydridoaluminate,
or lithium tris(tert-butoxy)hydridoaluminate in tetrahydrofuran gave 8-methyl-5-methylsulfanylmethyl-3-thiabicyclo[3.3.1]non-7-en-6-ol. 8-Methyl-5-methylsulfanylmethyl-3-thiabicyclo[3.3.1]nonan-6-ol
was obtained by reduction of the title compound with sodium tetrahydridoborate in pyridine or dimethylformamide. The reaction
of 8-methyl-5-methylsulfanylmethyl-3-thiabicyclo[3.3.1]non-7-en-6-one with hydroxylamine hydrochloride afforded the corresponding
oxime. 相似文献
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Starting from 1,4-dioxaspiro[4,5]decan-8-one and 4-hydroxycyclohexanone, we have synthesized derivatives of tetrahydrobenzofurazan and tetrahydrobenzofuroxan containing a hydroxy or dioxolane group in the 6 position of the ring. We have studied the behavior of the compounds obtained under acid hydrolysis conditions.Novosibirsk Institute of Organic Chemistry, Russian Academy of Sciences, Siberian Branch, Novosibirsk 630090, Russia. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 8, pp. 1135–1142, August, 2000. 相似文献
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S. D. Mikhno T. M. Filippova T. N. Polyanskaya S. I. Peretokina I. G. Suchkova V. M. Berezovskii 《Chemistry of Heterocyclic Compounds》1978,14(12):1315-1319
It is shown that acrolein adds to the 4 position (rather than to the 2 position) of 4-benzamido-3-oxothiophan under the influence of catalysts with basic character; the aldehyde group of the intermediate compound reacts with the amino group (if the reaction is carried out in chloroform) to give 6-benzoyl-7-hydroxy-2-thia-6-azaspiro[4.4]nonan-4-one or (if the reaction is carried out in a mixture of alcohol and chloroform) 1-benzamido-4-hydroxy-6-thiabicyclo-[3.2.1]octan-8-one as a result of intramolecular aldol condensation.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 12, pp. 1620–1624, December, 1978. 相似文献
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A series of chalcone derivatives (3a–k) were prepared via the reaction of cis-bicyclo[3.2.0]hept-2-en-6-one (1) with the respective arylaldehydes (2a–k) and were then characterized by Fourier transform infrared (FT-IR), 1H NMR, 13C NMR, and elemental analyses. 相似文献
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M. V. Lomonosov Moscow State University. Translated from Zhurnal Strukturnoi Khimii, Vol. 31, No. 6, pp. 104–107, November–December, 1990. 相似文献