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1.
X-ray structural analysis revealed that the product of the reaction of 3,6-dialkyl-substitutedN-oxo-2,1-benzoisoxazolinium sulfate with hydrochloric acid is 6-tert-butyl-4,5-dichloro-3-ethyl-4,5-dihydro-2,1-benzoisoxazole.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 5, pp. 862–864, May, 1994. 相似文献
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A. N. Chekhlov 《Russian Chemical Bulletin》1992,41(12):2168-2171
The molecular structure of 2-methyl-4,4-diphenyl-5-phenylazo-2-thia-3-aza-4-phosphahepta-2,4-diene-6-one-2-oxide has been determined by x-ray crystallography. The sulfur and phosphorus atoms exhibited distorted tetrahedral coordination. The P-N and P=C bond lengths are intnermediate between single and double bond lengths. Delocalization of -electron density was observed in the flattened molecular fragment Ph–N=N–C(=P)–C(=O)–CH3.Institute of Physiologically Active Substances, Russian Academy of Sciences, 142432 Chernogolovka. Translated fromIzvestiya Akademii Nauk, Seriya Khimicheskaya, No. 12, pp. 2737–2741, December, 1992. 相似文献
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Z. G. Aliev A. N. Maslivets T. M. Gorkovets Yu. S. Andreichikov L. O. Atovmyan 《Russian Chemical Bulletin》1999,48(3):604-607
4-p-Ethoxybenzoyl-5-methoxycarbonyl-1-p-tolylpyrrole-2,3-dione reacts withp-tolylhydrazine to form 5-p-ethoxyphenyl-3-methoxycarbonyl-1-p-tolyl-4-p-tolylxamoylpyrazole. The molecular and crystal structure of the title compound was studied by X-ray diffraction analysis.
Deceased
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 3, pp. 610–613, March, 1999. 相似文献
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A. A. Krauze É. É. Liepin'sh Yu. É. Pelcher Z. A. Kalme I. V. Dipan G. Ya. Dubur 《Chemistry of Heterocyclic Compounds》1985,21(1):77-83
The condensation of ethyl arylidenacetoacetate with cyanothioacetamide and of arylidenecyanothioacetamides with ethyl acetoacetate or of arylidenecyanothioacetamides with ethyl -aminocrotonate gave 3-cyano-4-aryl-5-ethoxycarbonyl-6-methyl-3,4-dihydropyridine-2-thiones. PMR spectroscopy showed that the 3-cyano-4-aryl-3,4-dihydropyridine-2-thiones are formed as a mixture of cis and trans isomers.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 1, pp. 95–102, January, 1985. 相似文献
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Z. G. Aliev N. Yu. Lisovenko L. O. Atovmyan A. N. Maslivetz 《Journal of Structural Chemistry》2004,45(3):527-531
The interaction of 5-aryl-4-quinoxaline-2,3-dihydro-2,3-furandiones with mesitylamine and methyl(phenyl) hydrazine results in the formation of 1-substituted 5-aryl-4-quinoxalinyl-2,3-dihydro-2,3-pyrrolediones. The crystal and molecular structure of the 1-mesityl-5-phenyl derivative was investigated by X-ray diffraction.Original Russian Text Copyright © 2004 by Z. G. Aliev, N. Yu. Lisovenko, L. O. Atovmyan, and A. N. MaslivetzTranslated from Zhurnal Strukturnoi Khimii, Vol. 45, No. 3, pp. 553–557, May–June 2004. 相似文献
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Two ethyl 3-acetamido-4-aryl-6-methyl-2-oxo-3,4-dihydropyran-5-carboxylates(3) were synthesized with high diastereoselectivities and characterized by IR,NMR and MS.The configuration of 3a was confirmed by single-crystal X-ray diffraction,ethyl 3-acetamido-4-(4-nitrophenyl)-6-methyl-2-oxo-3,4-dihydropyran-5-carboxylate(3a),C17H18N2O7.The crystal is of orthorhombic,space group Pbca with a = 11.7781(16),b = 9.5979(10),c = 32.115(3),V = 3630.4(7)3,Z = 8,Mr = 362.33,Dc = 1.326 Mg/m3,λ = 0.71073,μ(MoKα) = 0.104 mm-1,F(000) = 1520,the final R = 0.0646 and wR = 0.1464 for 1788 observed reflections with I > 2σ(I).The N-H and oxygen atom are involved in intermolecular hydrogen bonds which link the molecules into a one-dimensional chain and stabilize the structure. 相似文献
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1 INTRODUCTION It is reported that diazo pyrazoles are im- portant intermediates in the synthesis of numerous fused pyrazole heterocyclic compounds, which maybe exhibit high pharmaceutical functions and pesticidal activity[1]. So far, diazotization is a… 相似文献
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Z. G. Aliev L. O. Atovmyan S. S. Kataev V. V. Zalesov 《Chemistry of Heterocyclic Compounds》2007,43(3):377-381
Reactions between 2-pyridylamides of Z-4-aryl-2-hydroxy-4-oxobut-2-enoic acids with diazomethane have been used to synthesize
3-(2-aryl-2-oxoethyl)-3-methoxy-2-oxo-2,3-dihydroimidazo[1,2-a]pyridines, which form hydrochlorides with hydrochloric acid.
The structure of the latter has been demonstrated by XRD for the hydrochloride of 3-methoxy-2-oxo-3-(2-phenyl-2-oxoethyl)-2,3-dihydroimidazo[1,2-a]pyridine.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 3, pp. 464–468, 2007. 相似文献
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Z. G. Aliev L. O. Atovmyan V. O. Koz'minykh Yu. S. Andreichikov 《Russian Chemical Bulletin》1992,41(3):488-490
The crystal and molecular structures of 2-methoxycarbonylmethylene-5-phenyl-2,3-dihydrofuran-3-one have been analyzed by x-ray crystallography. The solid-phase photodimerization of this compound has been found to be topochemical in nature.For previous communication, see [1].Institute of Chemical Physics, Russian Academy of Sciences, Chernogolovka 142432. Translated from Izvestiya Akademii Nauk, Seriya Khimicheskaya, No. 3, pp. 620–624, March, 1992. 相似文献
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Synthesis and Crystal Structure of Ethyl2—(2—Amino—3—ethoxycarbonyl—4H—benzopyran—4—yl)cyanoacetate 总被引:1,自引:0,他引:1
1 INTRODUCTION Inorganic solid supports as catalysts resulting in higher selectivity, milder conditions and easier work-up have been reported as useful catalysts for many reactions [1~3]. Recently, we have reported the Knoevenagel condensation catalyzed by KF-Al2O3[4]. In this paper, we discussed the crystal structure of the title compound synthesized by the reaction of salicylaldehyde and ethyl cyanoacetate in DMF using the catalyst KF-Al2O3 at room temperature KF-Al2O3. In or… 相似文献
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Z. G. Aliev O. P. Krasnykh A. N. Maslivets Yu. S. Andreichikov L. O. Atovmyan 《Russian Chemical Bulletin》1997,46(3):543-545
Thermal decarbonylation of 1-benzyl-4,5-dibenzoyl-2,3-dihydropyrrole-2,3-dione yields benzoyl[N-benzyl(phenylglyoxalimidoyl)]ketene. The latter undergoes intramolecular cyclization to 3-benzoyl-5-phenyl-2,3,4,5-tetrahydrofuro[3,2-c]isoquinolin-2-one. Which is oxidized to 3-benzoyl-5-phenyl-2H,4H-furo[3,2-c]isoquinolin-2-one under the reaction conditions. The crystal and molecular structure of the title compound was studied by
X-ray structural analysis.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 3, pp. 563–565, March, 1997. 相似文献
14.
Z. G. Aliev A. N. Maslivets O. P. Krasnykh Yu. S. Andreichikov L. O. Atovmyan 《Russian Chemical Bulletin》1993,42(9):1569-1572
Thermal decarboxylation of 3-p-toluoyl-1,2-dihydro-4H-pyrrolo[5,1-c][1,4]benzoxazine-1, 2,4-trione resulted in 2-oxo-2H-1,4-benzoxazin-3-yl(p-toluoyl)ketene; the latter under-goes [4+2]-cycloaddition withp-bromobenzaldehyde to form 1-p-bromophenyl-4-p-toluoyl-1, 3-dihydro-5H-[1,3]oxazino[4,3-c][1,4] benzoxazine-3,5-dione. The crystal and molecular structure of the latter has been studied by X-ray analysis.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1633–1636, September, 1993. 相似文献
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R. U. Amanov M. Yu. Antipin E. I. Matrosov A. A. Khodak Kh. T. Sharipov Yu. T. Struchkov M. I. Kabachnik 《Russian Chemical Bulletin》1992,41(3):495-499
X-ray diffraction analysis has been used to determine the crystal structures of the 1:1-composition products of protonation by perchloric acid of isomeric triphenyl-N-(4-methylpyridyl-2)phosphinimine (1) and triphenyl-N-(3-methylpyridyl-2)phosphinimine (2). The structures were refined toR=0.048 andR=0.052, respectively, using 2274 (1) and 2647 (2) reflections. The protonation centers are located at the sites of N atoms of the pyridine ring (1) and the phosphinimino group (2). The distribution of the bond lengths in the cations suggests that a significant contribution is made by a phosphonic structure with positive charges localized on the P atoms. N-H...O hydrogen bonds, with lengths of 2.890(4) and 3.020(3) Å, connect cations and anions in both structures.A. N. Nesmeyanov Institute of Heteroorganic Compounds, Russian Academy of Sciences, 117813 Moscow. Translated from Izvestiya Akademii Nauk, Seriya Khimicheskaya, No. 3, pp. 629–635, March, 1992. 相似文献
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报道了一种新的双锂盐络合物的合成及其X衍射单晶结构,该络合物含有2个 Li原子、一个(i-Pr2C6H3)2-dad配体及2个DME分子[triclinic,P-1,α=1.3478(4) ,b=1.5158(3),c=1.0730(3)nm,α=100.668(3)°,β=113.416(3)°,γ=97.128(3) °,Ⅴ=1.790(1)nm^3,Dc=1.06g/cm^3,Z=2,R/Rω=0.058/0.057]。 相似文献
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Rocío Miranda Lourdes Santana Marta Teijeira Eugenio Uriarte Alfonso Castiñeiras 《Structural chemistry》1997,8(6):453-457
5-Methoxy-4-methyl-2H-benzofuro[3,2-g]benzo-1-pyran-2-one was synthesized and its crystal structure was determined and compared with the optimal conformation arrived at by MM and AM1 theoretical calculations. The latter indicated that the tetracyclic skeleton is planar with total length (C2–C8) 9.23 å, and that the line joining the conters of the terminal-benzene and furan rings makes an angle of 30.5 with that joining the centers of the three rings of psoralen. The electronic properties of the reactive double bond in the pyran ring of1 are similar to those of simpler psoralens. 相似文献
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微波辐射下2,7,7-三甲基-3-乙氧羰基-4-(3-硝基苯基) -5-氧代-1,4,5,6,7,8-六氢喹啉的合成和晶体结构 总被引:2,自引:0,他引:2
标题化合物C21H24N2O5是由间硝基苯甲醛、达咪酮、乙酰乙酸乙酯、醋酸铵在微波辐射下干反应而得。结构通过单晶X-射线衍射法确定,其晶体属斜方晶系,空间群 Pbcn, a =17.953(3), b =15.206(4), c =14.299(3), V =3904.(2)3, Mr =384.42, Z =8, Dc =1.308g/cm3 , m(MoKa) =0.094mm-1, F(000)=1632。晶体结构用直接法解出,经全矩阵最小二乘法对原子参数进行修正,最终的偏离因子为R=0.0493, wR=0.1078。X-射线分析结果表明,吡啶环为船式构象,与之稠合的六元环为信封式构象。 相似文献
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用X射线单晶衍射方法测定了液晶化合物2,5-双(4-乙基苯甲酰氯基)苯乙烯(Ⅰ)和2,5-双(4-甲氧基苯甲酰氧基)苯甲醛(Ⅱ)的单晶结构和分子结构. 化合物Ⅰ属三斜晶系, 空间群P(1), 晶胞参数: a=0.9356(6) nm, b=0.9842(6) nm, c=1.3357(8) nm, α=108.68(5)°, β=105.67(5)°, γ=96.36(5)°, Z=2; 化合物Ⅱ属单斜晶系, 空间群P_n, 晶胞参数: a=0.9109(2) nm, b=0.9187(3) nm, c=2.3166(8) nm, β=93.93(2)°, Z=4. 在化合物Ⅰ和Ⅱ晶体中, 分子均呈伸展构象, 分子中的三个苯环平面取向相互成一定的夹角. 分子在晶胞中治其伸展方向相互平行堆积, 相邻分子的侧链基团(乙烯基, 甲醛基)以较短的分子间距0.47-0.56 nm相向排列. 化合物Ⅰ晶胞中分子堆积密度比化合物Ⅱ松散. 晶体结构分析结果合理地解释了化合物Ⅰ的高聚合性. 相似文献
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D. M. Roitershtein K. A. Lyssenko P. A. Belyakov M. Yu. Antipin E. S. Petrov 《Russian Chemical Bulletin》1997,46(9):1590-1594
The reaction of the cyclopentadienyllutetium anthracenide, C5H5Lu(C14H10)2−(THF)2 (1), with azobenzene yielded the [C5H5(THF)Lu(μ−η2:η2−PhN—NPh)]2(THF)2 (2) binuclear complex. The structure of the reaction product was established by X-ray structural analysis. The dynamic behavior
of complex2 in a THF-d8 solution was studied by1H NMR spectroscopy in the temperature range of 265–330 K.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1667–1671, September, 1997. 相似文献