共查询到20条相似文献,搜索用时 15 毫秒
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M. F. Braa Maria L. Lpez Rodriguez J. Garrido C. M. Roldn 《Journal of heterocyclic chemistry》1981,18(7):1305-1308
Reaction of N-(4-pyridylmethyl)benzamide N-oxides with acetic anhydride yielded dimerization compounds. This dimerization occurs at the atom attached to the pyridine ring. These compounds so obtained were evaluated for analgesic and antiinflammatory activity. 相似文献
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Feng Li Shouliang Zhang Haijun Hao Dongyue Chen Junpeng Zhuang 《Tetrahedron letters》2019,60(21):1416-1420
2-Phenyl-1,3-di(4-pyridyl)naphthvalene 3a was synthesized by the photoinduced reversible valence isomerization of 2-phenyl-1,3-di(4-pyridyl)naphthalene 2a. Then, 3a was converted into 3-phenyl-1,2-di(4-pyridyl)naphthalene 4a and 2a simultaneously. The t1/2 of 3a in DMSO-d6 at 90 °C was 2 h, while that at 110 °C was approximately 10 min. 相似文献
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V. A. Kuropatov V. K. Cherkasov G. K. Fukin G. A. Abakumov 《Russian Chemical Bulletin》2011,60(11):2291-2295
A reaction of 3,6-di(tert-butyl)-4-chloro-1,2-benzoquinone with disubstituted N,N-dithiocarbamates leads to zwitterionic compounds containing 2-iminio-1,3-dithiole ring annulated to the quinone skeleton. These products reversibly add acids, giving salts of the corresponding catechols; they form complexes with copper involving oxygen atoms, as well. 相似文献
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M. Carmen Molleda M. Antonia Mendiola José R. Masaguer Cristina Molleda 《Transition Metal Chemistry》1987,12(4):381-384
Summary 2-Pyridylphenylacetonitrile (ppa) and 1,2-dicyano-1,2-diphenyl-1,2-di(2-pyridyl)ethane (dcppe) react with titanium(III) and vanadium(III) chlorides yielding complexes of formulae: [TiCl3(ppa)2], [TiCl3(ppa)3], [VCl3(ppa)], [TiCl3(dcppe)] and [(VCl3)2(dcppe)]. The results obtained suggest pentacoordinated structures for complexes, except for [TiCl3(ppa)3] where an hexacoordinated stereochemistry around the metal is proposed. 相似文献
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Summary 2-Pyridylphenylacetonitrile (ppa) is oxidized by iron(III) chloride in dry ethanol to 1,2-dicyano-1,2-di(phenyl)-1,2-(2-pyridyl)ethane (dcppe). When 1,2-dichloroethane or ether are used as solvents, a 31 complex of dcppe with iron trichloride, [(FeCl3)3(dcppe)] is obtained.Titanium(IV), vanadium(IV) and chromium(III) chlorides react with ppa and dcppe, giving complexes of general formulae [MCl4(ppa)] (M = Ti or V), [CrCl3(ppa)n] (n = 2 or 3), [(MCl4)2(dcppe)] (M = Ti or V) and [CrCl3(dcppe)]. 相似文献
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《Journal of Coordination Chemistry》2012,65(3):471-478
Two isostructural compounds, [Co(pam)(bpe)(H2O)2]n (1) and [Mn(pam)(bpe)(H2O)2]n (2) (H2pam = pamoic acid, bpe = 1,2-di(4-pyridyl)ethane), have been solvothermally synthesized and characterized by elemental analyses, IR, and powder X-ray diffraction. Single-crystal X-ray analysis reveals that 1 and 2 are isostructural and feature a threefold interpenetrated cds topological framework. Magnetic investigations reveal that both 1 and 2 exhibit antiferromagnetic properties. 相似文献
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The iron coordination chemistry of 3,5-di(2-pyridyl)-1,2,4-triazoles and 3,5-di(2-pyridyl)-1,2,4-triazolates is reviewed. This includes both mononuclear and dinuclear complexes, and both iron(II) and iron(III) oxidation states. The main focus is on the synthesis, structure and magnetic properties of these complexes. 相似文献
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Levinger S Sharabi-Ronen Y Mainfeld A Albeck A 《The Journal of organic chemistry》2008,73(19):7793-7796
Diamidic and dicarbamic bispidinones show trans-cis isomerism, the relative population in solution of the cis form increasing with solvent polarity. The mutual proximity of the two amide functions in 4a has no impact on the barrier to isomerization. The system represents a peculiar case of planar chirality posing a challenge to its specification. 相似文献
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Stuart R. Batten Christine J. McKenzie Lars Preuss Nielsen 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(2):156-157
In the title complex, [FeCl2(C30H28N6)], the Fe atom is five-coordinated by two terminal chloride ligands and one end of the bis-tridentate ligand. The complexes display intermolecular C—H⃛π, π-stacking and C—H⃛X (X = N, Cl) interactions. 相似文献
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A number of chemical modifications of 2-phenyl-1,3-di(4-pyridyl) - 2 - propanol are described. Dehydration, alkylation and hydrogenation, concomitant and independent, gave a variety of novel compounds. Independent syntheses produced the related compounds X and XVI which were subjected to some of the same reactions. Structural assignments (spectral) were corroborated by the synthesis of common reaction products. 相似文献
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Miguel F. Braa Jos M. Castellano Maria L. Lpez Rodriguez Magdalena Glvez Manuel R. Amil Enrique Rubio 《Journal of heterocyclic chemistry》1987,24(2):369-371
Hydrolysis of N,N'-diacyl-1,2-di(4-pyridyl)ethylenediamines 1 in aqueous sulfuric acid gave the corresponding imidazolines 3. 1,2-Di-(4-pyridyl)ethylenediamine 2 was prepared in 61 % yield by treating N,N'-di-t-butyl-oxycarbonyl-1,2-di(4-pyridyl)ethylenediamine 4 with trifluoroacetic acid or in 94% yield by the hydrolysis under basic conditions of N,N'-diphthaloylglycyl-1,2-di(4-pyridy)ethylenediamine 13. 相似文献
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N. E. Dontsov V. N. Nesterov A. M. Shestopalov V. P. Litvinov 《Russian Chemical Bulletin》2005,54(5):1239-1244
The reactions of substituted pyridinium salts with E-1,2-di(alkylsulfonyl)-1,2-dichloroethenes proceed regiospecifically. Heating of these reagents in chloroform in the presence
of a threefold excess of Et3N affords substituted 1,2-di(alkylsulfonyl)indolizines in high yields. The structures of the reaction products were confirmed
by physicochemical methods, including X-ray diffraction.
Dedicated to Academician N. K. Kochetkov on the occasion of his 90th birthday.
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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 5, pp. 1205–1209, May, 2005. 相似文献
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