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为实现多种活性成分的有效叠加和为药物筛选提供先导化合物,以1-苯基-3-甲基-5-氯/苯氧基-4-吡唑甲酸为初始原料,依次合成1-苯基-3-甲基-5-氯/苯氧基-4-吡唑甲酰氯、1-苯基-3-甲基-5-氯/苯氧基-4-吡唑甲酰基异硫氰酸酯,再与取代苯并噻唑肼反应生成了8个未见报道的N-取代苯并噻唑-2-氨基-N'-取代吡唑-4-甲酰基硫脲.采用超声波催化法合成了标题化合物,并与加热回流的常规方法进行了对比.超声波催化法具有操作简单、反应时间短、条件温和、产率高、副反应少等优点,为此类化合物的合成提供了一种有效的新方法.标题化合物经元素分析,IR,1HNMR确证结构. 相似文献
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为实现多种活性成分的有效叠加和为药物筛选提供先导化合物, 以1-苯基-3-甲基-5-氯/苯氧基-4-吡唑甲酸为初始原料, 依次合成1-苯基-3-甲基-5-氯/苯氧基-4-吡唑甲酰氯、1-苯基-3-甲基-5-氯/苯氧基-4-吡唑甲酰基异硫氰酸酯, 再与取代苯并噻唑肼反应生成了8个未见报道的N-取代苯并噻唑-2-氨基-N'-取代吡唑-4-甲酰基硫脲. 采用超声波催化法合成了标题化合物, 并与加热回流的常规方法进行了对比. 超声波催化法具有操作简单、反应时间短、条件温和、产率高、副反应少等优点, 为此类化合物的合成提供了一种有效的新方法. 标题化合物经元素分析, IR, 1H NMR确证结构. 相似文献
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超声辐射下合成1-[(未)取代苯酰基-3-[5-(1-苯基-3-甲基-5-氯吡唑-4-基)-1,3,4-噻二唑-2-基]-硫脲 总被引:2,自引:0,他引:2
1-苯基-3-甲基-5-氯吡唑-4-甲酸与氨基硫脲在三氯氧磷中反应得到2-氨基-5-(1-苯基-3-甲基-5-氯吡唑-4-基)-1,3,4-噻二唑(1), 然后分别采用超声辐射法和常规加热法与(未)取代苯甲酰基异硫氰酸酯(2)反应合成了一系列未见报到的1-[(未)取代苯酰基-3-[5-(1-苯基-3-甲基-5-氯吡唑-4-基)-1,3,4-噻二唑-2-基]-硫脲(3a~3j). 化合物的结构经元素分析, IR, 1H NMR确证. 相似文献
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5-苯基-1H-3吡唑酰腙化合物的合成及其结构表征 总被引:1,自引:1,他引:0
采用"一锅法"合成了5-苯基-1H-3-吡唑甲酸乙酯,进而合成了9种5-苯基-1H-3-吡唑酰腙化合物,通过元素分析、红外光谱、核磁共振氢谱等测试技术对这9个化合物的结构进行了表征. 将5-苯基-1H-3-吡唑甲酸乙酯水解得到5-苯基-1H-3-吡唑甲酸,此化合物与Cu(AcO)2配位,得到一个铜的三核配合物晶体,该晶体属单斜晶系,空间群为C2/c,晶胞参数为a=2.576 7(3) nm,b=1.1 94 4(1) nm,c=1.412 7(2) nm,β=98.993(2)°,V=4.294 1(9) nm 3,Z=4,Dc=1.629 g/cm 3,R1=0.035 5,结果更进一步确定了吡唑环的结构. 相似文献
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1-芳基-4-吡唑-5-酰基氨基脲类化合物的合成及杀菌活性 总被引:1,自引:0,他引:1
为了寻求新的吡唑先导化合物, 用4-氯-1-甲基-3-乙基-5-吡唑甲酰肼与取代苯基异氰酸酯反应得到了14个新的1-吡唑酰基-4-芳基氨基脲类化合物. 经IR, 1H NMR, MS和元素分析对化合物的结构进行了表征. 初步生物活性实验结果表明, 在500 mg/mL浓度下, 化合物1-(4-氯-3-乙基-1-甲基-1H-吡唑-5-甲酰基)-4-(2-甲基苯基)氨基脲(4g), 1-(4-氯-3-乙基-1-甲基-1H-吡唑-5-甲酰基)-4-(2,4-二甲基苯基)氨基脲(4k)对小麦白粉病菌(Blumeria graminis)的抑制率分别达到90%和80%; 在25 mg/mL浓度下, 化合物1-(4-氯-3-乙基-1-甲基-1H-吡唑-5-甲酰基)-4-苯基氨基脲(4c)对黄瓜灰霉病菌(Botrytis cinerea)的抑制率达到70.1%; 化合物1-(4-氯-3-乙基-1-甲基-1H-吡唑-5-甲酰基)-4-苯基氨基脲(4c)和1-(4-氯-3-乙基-1-甲基-1H-吡唑-5-甲酰基)-4-(2-硝基苯基)氨基脲(4d)对稻瘟病菌(Pyricularia oryzae)的抑制率均达到51.3%. 相似文献
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A. N. Chekhlov N. A. Bondarenko M. V. Raitarskaya M. V. Rudomino E. N. Tsvetkov I. V. Martynov 《Russian Chemical Bulletin》1988,37(11):2365-2366
Conclusions The six-membered heterocycle in the crystal structure of 4-phenyl-4-oxo-1,4-oxaphos-phorinane has the chair conformation with equatorial position of the phenyl substituent.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 11, pp. 2625–2627, November, 1988. 相似文献
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Leonard Jurd 《Journal of heterocyclic chemistry》1991,28(4):983-986
Sesamol and other phenols react with equimolar quantities of cinnamaldehyde and morpholine in methanol to yield epimeric 2-morpholinyl-4-phenylbenzopyran derivatives, which are useful intermediates for the synthesis of alcoholic neoflavanoid (4-phenylbenzopyran) compounds. 相似文献
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4-Phenyl-1-butyne and 5-phenyl-1-pentyne were studied by a combination of methods including resonance-enhanced-two-photon ionization, UV-UV hole-burning spectroscopy, and rotational band contour studies. There are two conformations of 4-phenyl-1-butyne observed in the expansion with their S1<-- S0 origins occurring at 37617 and 37620 cm(-1). MP2 and DFT calculations identify these two low energy conformations (with the acetylenic group anti or gauche with respect to the ring) and confirm that these are the only two low energy conformations anticipated to have population in them. The experimental rotational band contours of the origin bands were compared to simulations based on transition moment directions and rotational constants predicted by CIS calculations. This comparison leads to definitive assignments for the bands, with the gauche and anti conformations assigned to the red and blue-shifted conformers, respectively. Three conformations of 5-phenyl-1-pentyne were observed in the expansion with their S1<-- S0 origins occurring at 37538, 37578, and 37601 cm(-1). MP2 and DFT calculations predict four low energy structures arising from gauche or anti conformations about each of the Calpha-Cbeta and Cbeta-Cgamma bonds. Rotational band contour analysis was used to assign the above transitions to gauche-anti (ga), gauche-gauche (gg), and anti-gauche (ag) structures, respectively. 相似文献
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K. Hohenlohe-Oehringen 《Monatshefte für Chemie / Chemical Monthly》1963,94(6):1222-1224
Ohne Zusammenfassung 相似文献
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V. T. Grachev B. E. Zaitsev P. B. Terent'ev N. P. Lomakina K. M. Dyumaev 《Chemistry of Heterocyclic Compounds》1975,11(9):1082-1086
It was shown by UV spectroscopy that 3-phenyl-4-hydroxy-isoquinoline exists in neutral, dipolar, cationic, and anionic forms, depending on the medium. The angle of rotation between the planes of the phenyl ring and the hetero-ring, the length of the “single” C-C bond connecting these rings, and its degree of double bond character in neutral, acidic, and alkaline media were calculated by means of perturbation theory within the framework of the Hückel MO method. On the basis of a study of the π-electron structure of 3-phenyl-4-hydroxyisoquinoline, it was concluded that its various forms have aromatic character. The energy of conjugation of the phenyl group with the π system of 4-hydroxyisoquinoline was calculated. A method for the calculation of the coulombic and resonance parameters for the heteroatoms from experimental UV spectroscopic data and the ionization potentials of the molecules by means of perturbation theory is presented. 相似文献
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K. Hohenlohe-Oehringen 《Monatshefte für Chemie / Chemical Monthly》1963,94(6):1217-1221
Zusammenfassung Phenacetylcyclohexen wurde in dieMannichbase (II) und diese mittels Methylamin unter Umaminierung und Ringschluß in 1-Methyl-3-phenyldekahydrochinolon-(4) (III) übergeführt. Von den aus III erhaltenen 4 stereoisomeren Oximen (IV a-d) wurde IV c mit LiAlH4 zu dem Amin V reduziert. 相似文献