排序方式: 共有56条查询结果,搜索用时 15 毫秒
1.
V. P. Sheverdov O. V. Ershov A. V. Eremkin O. E. Nasakin I. N. Bardasov V. A. Tafeenko 《Russian Journal of Organic Chemistry》2005,41(12):1757-1763
β,β,γ,γ-Tetracyanoalkanones react with acrolein at a high rate to afford the corresponding 2-substituted 4-formyl-3-cyclopentene-1,1,2-tricarbonitriles in high yields. The reaction occurs under mild conditions and is quite applicable for modification of natural and biologically active compounds possessing an R′CHC(O)CR3 fragment to obtain their derivatives containing three cyano groups. 相似文献
2.
Viktor A. Tafeenko Gennady N. Panin Andrey N. Baranov Ivan N. Bardasov Leonid A. Aslanov 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(12):m541-m547
Yellow–orange tetraaquabis(3‐cyano‐4‐dicyanomethylene‐5‐oxo‐4,5‐dihydro‐1H‐pyrrol‐2‐olato‐κN3)cadmium(II) dihydrate, [Cd(C8HN4O2)2(H2O)4]·2H2O, (I), and yellow tetraaquabis(3‐cyano‐4‐dicyanomethylene‐5‐oxo‐4,5‐dihydro‐1H‐pyrrol‐2‐olato‐κN3)cadmium(II) 1,4‐dioxane solvate, [Cd(C8HN4O2)2(H2O)4]·C4H8O2, (II), contain centrosymmetric mononuclear Cd2+ coordination complex molecules in different conformations. Dark‐red poly[[decaaquabis(μ2‐3‐cyano‐4‐dicyanomethylene‐5‐oxo‐4,5‐dihydro‐1H‐pyrrol‐2‐olato‐κ2N:N′)bis(μ2‐3‐cyano‐4‐dicyanomethylene‐1H‐pyrrole‐2,5‐diolato‐κ2N:N′)tricadmium] hemihydrate], [Cd3(C8HN4O2)2(C8N4O2)2(H2O)10]·0.5H2O, (III), has a polymeric two‐dimensional structure, the building block of which includes two cadmium cations (one of them located on an inversion centre), and both singly and doubly charged anions. The cathodoluminescence spectra of the crystals are different and cover the wavelength range from UV to red, with emission peaks at 377 and 620 nm for (III), and at 583 and 580 nm for (I) and (II), respectively. 相似文献
3.
Bardasov I. N. Alekseeva A. U. Dianov N. P. Mikhailov A. A. Ershov O. V. 《Russian Journal of Organic Chemistry》2019,55(11):1731-1734
Russian Journal of Organic Chemistry - Potassium salts of cinnamylidene derivatives of malononitrile trimer were obtained by the reactions of malononitrile trimer with cinnamaldehyde derivatives.... 相似文献
4.
Ivan N. Bardasov Anastasiya U. Alekseeva Denis L. Mihailov Oleg V. Ershov Oleg E. Nasakin Viktor A. Tafeenko 《Tetrahedron letters》2014
The synthesis of 2-(dicyanomethylene)-1,2-dihydropyridine derivatives from the reactions of arylmethylidene derivatives of malononitrile dimers with 1,3-dicarbonyl compounds is described. 相似文献
5.
Ya. S. Kayukov I. N. Bardasov O. V. Ershov O. E. Nasakin O. V. Kayukova V. A. Tafeenko 《Russian Journal of Organic Chemistry》2012,48(4):485-490
3-Benzoylcyclopropane-1,1,2,2-tetracarbonitrile reacted with water to give 2-benzoyl-1,3-dicyanocyclopropane-1-carboxamide
as a result of hydrolysis of the cyano group in the trans position with respect to the carbonyl group and subsequent decarboxylation. The reaction of 3-benzoyl-3-methylcyclopropane-1,1,2,2-tetracarbonitrile
with water involved heterocyclization with participation of the carbonyl group and cis-cyano groups, leading to 8-methyl-3,6-dioxo-1-phenyl-2,7-diazatricyclo[3.2.1.04,8]octane-4,5-dicarbonitrile. Hydrolysis of 3-alkylcyclopropane-1,1,2,2-tetracarbonitrile followed both reaction paths to produce
mixtures of products, including 7-alkyl-4-amino-7-hydroxy-1,9-dioxo-3,8-diazatricyclo[4.3.0.01,5]non-3-ene-5-carbonitriles. In all cases, the three-membered ring was retained. 相似文献
6.
Ivan N. Bardasov Anastasiya U. Alekseeva Sergey S. Chunikhin Viktor A. Tafeenko Oleg V. Ershov 《Tetrahedron letters》2017,58(41):3919-3923
The synthesis of triarylpyridine derivatives containing a buta-1,3-diene-1,1,3-tricarbonitrile fragment via the base-promoted reactions of aromatic aldehydes, 2-phenylacetophenone and a malononitrile dimer in the presence of an oxidant is described. The influence of aryl substituents in the 4-position on the optical properties is also reported. 相似文献
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8.
I. N. Bardasov N. L. Malyshkina A. Yu. Alekseeva O. V. Ershov D. V. Timrukova A. O. Grigor’eva 《Russian Journal of Organic Chemistry》2017,53(1):47-50
A procedure has been developed for the conversion of the CS gas [2-(2-chlorobenzylidene)-malononitrile] to new 3-cyanocoumarin derivatives, 4-(2-chlorophenyl)-2-oxo-2H-chromene-3-carbonitriles. Study of the optical properties of the synthesized compounds has revealed strong fluorescence in the violet and blue regions. 相似文献
9.
A. Yu. Alekseeva I. N. Bardasov D. L. Mikhailov O. V. Ershov 《Russian Journal of Organic Chemistry》2017,53(8):1243-1248
Reactions of aromatic aldehyde, 2-aminoprop-1-ene-1,1,3-tricarbonitrile and cyclic enhydrazinoketones led to the formation of N-substituted 5-aryl-2,4-diamino-6-oxo-5,6,7,8,9,10-hexahydrobenzo[b][1,8]- naphthyridine-3-carbonitriles 相似文献
10.