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The title compounds have been prepared form 1-lithio-undecafluorobicyclo-(2,2,1)heptane and 1H,4-lithio-decafluorobicyclo(2,2,1)heptane, respectively, and sulphur. The undecafluorothiol was also produced from sulphur and the carbanionic intermediate generated from 1H-undecafluorobicyclo(2,2,1)heptane and potassium t-butoxide in dimethyl sulphoxide (DMSO). The thiols were quite acidic and were fully characterised as their disulphides, methyl thio-ethers and related compounds. A novel elimination of sulphur was observed for the undecafluorothiol under conditions which left the 4H-decafluoro analogue unaffected, another example of the effect of substituents at one bridgehead position on reactivities at the other. 相似文献
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Vishnu J. Ram Lallan Mishra N. H. Pandey D. S. Kushwaha Luc A. C. Pieters Arnold J. Vlietinck 《Journal of heterocyclic chemistry》1990,27(2):351-355
Synthesis of several bis(4-arylthiosemicarbazido- 1 , bis(2-arylamino-1,3,4-thiadiazol-5-yl)- 5 and bis(4-aryl-1,2,4-triazolin-3-thione-5-yl)- 2 pentanes is described. Sulphides 3 and sulphones 4 are also prepared from 2 by alkylation and subsequent oxidation with hydrogen peroxide respectively. 相似文献
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N. N. Aleinikov S. A. Kashtanov I. A. Pomytkin A. M. Sipyagin 《Russian Chemical Bulletin》1995,44(1):180-181
Bis(tetramethylammonium), bis(tetrabutylammonium), and bis(tetraphenylarsonium) dihydrohexaoxoxenonates(VIII) were obtained in an aqueous solution and in acetonitriie. The rate constants of their decomposition were determined.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 1, pp. 184–185, January, 1995.This work was carried out with financial support from the International Scientific Foundation (Grant REI 000). 相似文献
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R. R. Gataullin R. R. Ishberdina A. M. Sotnikov I. B. Abdrakhmanov 《Russian Journal of Applied Chemistry》2005,78(3):438-440
Alkenylation of 6-methyl-2-(2-cyclohexen-1-yl)- and 2-(1-cyclohexen-1-yl)anilines with piperylene in the presence of AlCl3 and transformation of the resulting cyclohexenylanilines into carbazole structures were studied.__________Translated from Zhurnal Prikladnoi Khimii, Vol. 78, No. 3, 2005, pp. 441–443.Original Russian Text Copyright © 2005 by Gataullin, Ishberdina, Sotnikov, Abdrakhmanov. 相似文献
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Benson M. Kariuki Bakr F. Abdel-Wahab Hanan A. Mohamed Mohamed S. Bekheit Gamal A. El-Hiti 《Molecules (Basel, Switzerland)》2022,27(24)
Reactions of 1-(5-methyl)-1H-1,2,3-triazol-4-yl)ethan-1-ones and benzaldehydes in ethanol under basic conditions gave the corresponding chalcones. Reactions of the chalcones combined with thiosemicarbazide in dry ethanol containing sodium hydroxide afforded the corresponding pyrazolin-N-thioamides. Reactions of the synthesized pyrazolin-N-thioamides and several ketones (namely, ethyl 2-chloro-3-oxobutanoate, 2-bromoacetylbenzofuran, and hydrazonoyl chloride) gave the corresponding novel 2-(1,2,3-triazol-4-yl)-4,5-dihydro-1H-pyrazol-1-yl)thiazoles in high yields (77–90%). Additionally, 2-(4,5-dihydro-1H-pyrazol-1-yl)-4-(1H-1,2,3-triazol-4-yl)thiazoles were obtained in high yields (84–87%) from reactions with N-pyrazoline-thioamides and 4-bromoacetyl-1,2,3-triazoles under basic conditions. The structures of six of the newly synthesized heterocycles were confirmed by X-ray crystallography. 相似文献
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G. A. Razuvaev A. S. Gordetsov T. N. Brevnova V. V. Semenov A. N. Kornev E. A. Mishina Yu. I. Dergunov 《Russian Chemical Bulletin》1985,34(12):2620-2621
Conclusions The reaction of chlorodi- and trisilanes with silver cyanamide gave bis(disilanyl)carbodiimides and bis(trisilanyl)carbodiimides in high yield.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 12, pp. 2824–2825, December, 1985. 相似文献
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Bis (2,4,6,8-cyclononatetraen-1-yl)methanes Bis (2,4,6,8-cyclononatetraen-1-yl)methanes ( 2a–c ) have been prepared by reaction of all-cis-cyclononatetraenide with 1,1-dichlorodimethyl ether as well as with carbenium ion precursors 9b and 9c . The title compounds 2 are attractive precursors of highly delocalised nonafulvenes of type 3 ; however, elimination experiments 2→3 failed so far. 相似文献
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《结构化学》2015,(5)
A new cinnamide derivative,(E)-1-(4-(bis(4-methoxyphenyl)methyl)piperazin-1-yl)-3-(4-acetoxy-3-methoxyphenyl)prop-2-en-1-one(C31H34N2O6,Mr = 530.60),has been synthesized by the condensation of 1-(bis(4-methoxyphenyl)methyl)piperazine and(E)-3-(4-acetoxy-3-methoxyphenyl)acrylic acid.The compound was characterized by 1H NMR,13 C NMR,H RMS and single-crystal X-ray diffraction.The crystal belongs to the orthorhombic system,space group P212121 with a = 24.946(5),b = 7.6380(15),c = 14.555(3) ?,V = 2773.3(10) ?3,Z = 4,Dc = 1.271 g/cm3,F(000) = 1128,μ = 0.088 mm-1,Mo Kα radiation(λ = 0.71073 ?),the final R = 0.0641 and w R = 0.1170.A total of 3009 unique reflections were collected,of which 1760 with I 2σ(I) were observed.Intramolecular C(17)–H(17B)···O(3) and C(22)–H(22A)···O(3) interactions as well as intermolecular C(27)–H(27A)···O(3) hydrogen bonds help to stabilize the crystal structure.The title compound was evaluated for the anti-ischemic activity in vitro and in vivo.The bioassay results indicated that the title compound displayed efficient activities against glutamine-induced neurotoxicity in PC12 cells and significantly prolonged the survival time of mice subjected to acute cerebral ischemia. 相似文献
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Pitushkin D. A. Burmistrov V. V. Saeef M. H. Abbas Vernigora A. A. Butov G. M. 《Russian Journal of Organic Chemistry》2020,56(11):1893-1904
Russian Journal of Organic Chemistry - A series of 1,3-disubstituted ureas containing a bicyclic lipophilic group of natural origin were synthesized by the reactions of bicyclo[2.2.1]heptane-2-yl... 相似文献
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G.A. Razuvaev V.N. Latyaeva L.I. Vishinskaya V.T. Bytchkov G.A. Vasilyeva 《Journal of organometallic chemistry》1975,87(1):93-99
The reaction of dicyclopentadienyltitanium dichloride with bis(triethylgermyl)mercury in benzene solution at 20° yields metallic mercury quantitatively, titanocene monochloride and triethylchlorogermane. The reaction of dicyclopentadienyltitanium dichloride with bis(triethylgermyl)cadmium leads to the formation of a complex of the following general composition: [Cp2TiCl2 - Cd(GeEt3)2]. The reactivity of this complex has been studied: in toluene solution at 20° it decomposes slowly to yield metallic cadmium, triethylchlorogermane and Cp2TiCl(GeEt3). 相似文献
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Krasnov V. P. Vigorov A. Yu. Nizova I. A. Grishakov A. N. Evstigneeva N. G. Kodess M. I. 《Russian Chemical Bulletin》2004,53(6):1327-1330
The reaction of dimethyl (2S,4RS)-N-phthaloyl-4-bromoglutamate with 2-methylindoline afforded diastereomeric 4-(2-methylindolin-1-yl)-(S)-glutamic acid derivatives, whose oxidation gave rise to 4-(2-methylindol-1-yl)-(S)-glutamic acid derivatives. 相似文献
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S. A. Znoiko V. E. Maizlish G. P. Shaposhnikov I. G. Abramov M. N. Voron’ko 《Russian Journal of General Chemistry》2007,77(9):1623-1627
Nucleophilic aromatic substitution of the bromine atom in 4-bromo-5-nitrophthalodinitrile by a 2-aminophenylamine residue followed by conversion of the resulting compound to 4-(1-benzothiazol-1-yl)-5-nitrophthalodinitrile and nucleophilic substitution of the nitro group by a 4-(1-methyl-1-phenylethyl)-phenoxy group gave 4-(benzotriazol-1-yl)-5-[4-(1-methyl-1-phenylethyl)phenoxy]phthalodinitrile. The latter product was reacted with certain metal acetates and chlorides to obtain the corresponding metal complexes of octasubstituted phthalocyanines. Spectral properties of the complexes were studied. 相似文献
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Starting from readily available 2-substituted-4-formylthiazoles and selenazoles, a series of 4-(2-aryl-4-selenazolyl)-1,2,3-selenadiazoles I and 4-(2-substituted-4-thiazolyl)-1,2,3-selenadiazoles II were prepared. Pyrolysis of compound II afforded (2-substituted-4-thiazolyl) acetylenes VII. Addition of potassium hydroxide pellets to an alcoholic solution of II gave 2-substituted-1,4-diselenafulvenes VIII. Decomposition of compound II with base followed by the addition of carbon disulfide gave 5-substituted 2-thioxo-1,3-thiaselenoles XI. 相似文献
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R. S. Medne Ya. Ya. Katsens I. L. Kraupsha O. Ya. Neiland 《Chemistry of Heterocyclic Compounds》1991,27(10):1053-1055
New homologs of bis(ethylenedithio)tetrathiafulvalene, viz., bis(cyclopentylenedithio)tetrathiafulvalene and bis(cyclohexylenedithio)tetrathiafulvalene, were obtained via a known scheme and characterized.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1317–1319, October, 1991. 相似文献