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1.
合成了九个以噻吩为母体环的含三唑环的化合物--2,3-二取代-4-(1H-1,2,4-三唑-1-基)-5-苯基氨基噻吩(2a~2i),并测定了2a的晶体结构.晶体为三斜晶系,P-1空间群,晶胞参数为:a=0.79816(15)nm,b=1.00259(13)nm,c=1.4478(4)nm,α=100.326(16)°,β=94.69(2)°,γ=106.083(9)°,V=1.0845(4)nm3,Z=2,Dc=1.396g/cm3.初步生物活性表明所有目标化合物杀菌活性较低,有一定的植物生长调节活性.  相似文献   

2.
取代苯甲醛经缩合、催化氢化、环氧化和开环反应合成了9种2,2-二甲基-5-取代苯基-3-(1,2,4-三唑-1-基甲基)-3-戊醇类化合物和2种2,2-二甲基-5-取代苯基-3-(1,2,4-三唑-4-基甲基)-3-戊醇类新化合物. 并对1,2,4-三唑-1-基衍生物和1,2,4-三唑-4-基衍生物的选择性合成进行了研究; 新化合物结构经质谱, 1H NMR, 元素分析等确证, 并用单晶X射线衍射测定了化合物1a的晶体结构. 生物活性测试结果表明, 部分化合物具有强杀菌活性.  相似文献   

3.
N-5-(1H-1,2,4-三唑基)-N'-芳甲酰基脲的合成与生物活性   总被引:5,自引:2,他引:5  
以5-氨基-1H-1,2,4-三唑-3-羧酸与酰基异氰酸酯反应,合成了15个新的N- 5-(1H-1,2,4-三唑基)-N'-芳甲酰基脲,用核磁共振氢谱、红外光谱和元素分 析确证了其结构,并进行了室内生物活性测试。生测试验证明部分酰基脲类化合物 具有良好的植物生长调节活性,其中N-5(3-羧基-1,2,4-三唑基)-N'-o-氯苯甲 酰基脲、N-5-(3-羧基-1,2,4-三唑基)-N'-o-溴苯甲酰基脲和N-5-(3-羧基-1, 2,4-三唑基)-N'-p(或m)-甲基苯甲酰基脲具有优良的生长素活性。  相似文献   

4.
以3-芳基-5-巯基-1,2,4-均三唑为原料,和甲醛及S-(-)-α-苯乙胺在酸催化作用下合成了6种新的化合物。研究了合成反应的条件。通过元素分析、IR、^1HNMR、和MS确证了其结构,测定了比旋光度和生物活性。结果表明,一些化合物具有一定的抗菌活性。  相似文献   

5.
通过α-卤代芳基乙酮和5-[(1H-1,2,4-三唑-1-基)甲基]-4-苯基-2H-1,2,4-三唑-3(4H)-硫酮反应, 合成了11个新的2-{5-[(1H-1,2,4-三唑-1-基)甲基]-4-苯基-4H-1,2,4-三唑-3-硫基}-1-芳基乙酮类化合物. 其结构经元素分析, IR, 1H NMR等确证, 并用X射线单晶衍射测定了化合物6f的晶体结构. 生物活性测试结果表明, 部分化合物具有一定的杀菌活性.  相似文献   

6.
N-(1,2,4-三唑)含氟肉桂醛亚胺的合成及生物活性   总被引:2,自引:0,他引:2  
含氟肉桂醛与4-氨基-5-(3,4,5-三甲氧基苯基)-1,2,4-三唑-3-硫酮(2)缩合生成5-(3,4,5-三甲氧基苯基)-4-取代苯基烯丙亚胺基-1,2,4-三唑-3-硫酮(3),再烷基化为新型含氟肉桂醛1,2,4-三唑亚胺(4).化合物结构经1HNMR,13CNMR,IR以及元素分析确认,并用X-ray单晶衍射测定了化合物4g的晶体结构,证实了分子中两个环外双键N=C和C=C均为E-式构型.初步生物活性测试结果表明,部分化合物具有抗植物病毒活性.  相似文献   

7.
以4-氨基-4,5-二氢-3-苯氧甲基-1氢-1,2,4-三唑-5-硫酮与取代苯甲醛为原料反应制得了9个新的三唑硫酮席夫碱类化合物,经IR、1H NMR和元素分析确定了各化合物结构。初步室内毒力测试结果表明该类化合物其具有较好的杀菌活性。  相似文献   

8.
1-取代-1-(1,2,4-三唑-1-基)频那酮的改良合成   总被引:1,自引:0,他引:1  
廖联安  郭奇珍 《有机化学》1988,8(2):169-170
在四烷基铵卤化物的液-液相转移催化作用下, 从α-三唑基频那酮和卤代烃合成了1-取代-1-(1,2,4-三唑-1-基)频那酮. 后者具有植物生长延缓活性和抗菌活性.  相似文献   

9.
通过不同的胺对烯唑醇前体1的1,4-亲核加成反应,合成了目标化合物2,并将其还原得到了其还原产物3.生物活性测试结果发现,化合物3表现出较好的杀菌活性及一定程度的植物生长调节活性.  相似文献   

10.
20世纪 80年代以来 ,科学家发现三唑类化合物具有杀菌、除草和植物生长调节作用[1~ 3] ,酰基脲类化合物所表现出来的优良生物活性已引起化学家的重视[4~ 7] ,我们在对三唑席夫碱的研究中发现其中不少化合物具有较高的植物生长调节活性[8\〗,而含三唑环的芳酰基脲还未见报道。为了寻找高活性的新型植物生长调节物质 ,本文采用亚结构连接法 ,在芳酰基脲结构中引入三唑环 ,设计合成了 8个新的含三唑基的芳酰基脲 ,其合成路线如下 :ArCONCO Ⅰ+H2 N NNNHCOOH DMF~ 60℃ ArCONHCONH NNNHCOOH ⅡAr :Ⅱa C6H5—Ⅱb o BrC6…  相似文献   

11.
A Schiff base was synthesized by 3-methyl-4-amino-5-ethoxycarbonyl-methylsulfanyl-1,2,4-triazole with 3-nitrobenzaldehyde. The structure was confirmed by 1H NMR, IR, H RMS, TGA techniques and X-ray diffraction. The crystal belongs to monoclinic system, space group P21/c, with a = 8.965(2), b = 21.903(5), c = 9.197(2) A, β = 114.011(4)°, C14H15N5O4 S, Mr = 349.08, V = 1649.7(6) A3, Dc = 1.407 g·cm-3, Z = 4, F(000) = 728, μ = 0.226 mm-1, the final R = 0.0574 and wR = 0.1336 for 2932 unique reflections with I 2σ(I). Furthermore, the biological activity to four vegetable pathogens has been tested. The title compound exhibits better biological activity to four vegetable pathogens compared to the Schiff base without 5-ethoxycarbonyl and to Gibberlla saubinetti in EC95 compared with triadimefon.  相似文献   

12.
设计并合成了 5种 5 ,7 二取代 2 ( 2 ,4 二氯苯氧乙酰亚胺基 ) 2H 1,2 ,4 噻二唑并 [2 ,3 a]嘧啶类化合物 5 ,均为未见文献报道的新化合物 .利用1HNMR、元素分析等确定了产物的结构 .初步除草活性测定结果表明 ,化合物 5对阔叶植物有优良的除草活性 ,且有一定的选择性 .为了进一步了解该类化合物的结构 ,也为设计新的除草剂分子提供帮助 ,对其中一种化合物 5b进行了X射线单晶衍射  相似文献   

13.
A novel Schiff base was synthesized via 5-benzyl-4-amino-1,2,4-triazole-3-thione with 3-phenoxy-benzaldehyde under refluxing. The structure was characterized by elemental analysis, IR, 1H NMR, ESI-MS and single-crystal X-ray diffraction. This compound crystallizes in monoclinic, space group P21 /c with a = 16.0289(16), b = 5.8022(6), c = 20.542(2), β = 95.667(2)o, C22 H18 N4 OS, Mr = 386.46, V = 1901.1(3)3, Z = 4, Dc = 1.347 g/cm3, F(000) = 804, μ = 0.191 mm-1, the final R = 0.0453 and wR = 0.1307 for 2456 observed reflections with I 2σ(I). The crystal packing of the compound is stabilized by classical intermolecular N–H···S hydrogen bonds. Furthermore, the biological activity to four vegetable pathogens has been tested. The title compound exhibited good fungicidal activities to Gibberlla nicotiancola.  相似文献   

14.
刘建兵  陶伟峰  胡燕  戴红  方建新 《有机化学》2006,26(11):1566-1570
用硼氢化钠还原3-芳基-1-(吡啶-3-基)-2-(1H-1,2,4-三唑-1-基)丙烯酮, 合成了10个新型含吡啶基的三唑醇类化合物. 所有化合物均经核磁、元素分析确证. 生物活性测试结果表明, 部分化合物具有一定的杀菌活性及植物生长调节活性.  相似文献   

15.
杜海堂 《化学通报》2019,82(9):831-836,854
为寻找具有杀菌活性的三唑类先导化合物,采用活性亚结构拼接方法,将香豆素环和硫醚结构单元引入到三唑类化合物分子中,合成一系列未见文献报道的新型含香豆素环和硫醚结构的三唑类衍生物。经~1H NMR、~(13)C NMR、IR、MS和元素分析对所合成化合物的结构进行了表征。初步生物活性测试表明,部分目标化合物在试验浓度下具有一定的抑菌活性。  相似文献   

16.
1 INTRODUCTION Heterocyclic compounds bearing the 1,2,4-tri- azole moiety have attracted considerable attention over the past few decades since they exhibit some fungicidal activities against Puccinia recondite and applications in the field of root-growth regu- lation[1~3]. Meanwhile, 4-amino-5-mercapto-1,2, 4-triazole moiety has great versatility in fusing tovarious ring systems and possesses a broad spec- trum of biological activities[4, 5]. In our con- tinuous work directed towards the…  相似文献   

17.
The title compound, 2-( 4-fluorophenyl ) -2-oxo-1-( 1H-1, 2,4-triazol-1-yl ) ethyl morpholine-4-carbodithioate, was synthesized and its structure was confirmed by means of IR, MS, 1 H NMR and elemental analysis. The single crystal structure of the title compound was determined by X-ray diffraction. The preliminary biological test showed that the synthesized compound possesses some biological activities.  相似文献   

18.
许良忠  许凤玲  李凯  李春丽  周凯 《中国化学》2005,23(10):1421-1424
根据生物电子等排理论合成了7种含1,3-二氧戊环的新三唑类化合物。其结构通过元素分析、核磁共振氢谱、红外光谱、质谱和单晶X射线衍射法确证。采用离体平皿法对它们的杀菌活性进行了比较,同时测定了它们的植物生长调节活性。测定结果表明化合物4a对黄瓜子叶生根具有较强的促进作用,促进率达159%。  相似文献   

19.
The title compound 1-((5-(4-(4-chlorophenoxy)-2-chlorophenyl)-2,2,3-trimethyl-oxazolidin- 5-yl)methyl)-lH-1,2,4-triazole (C21H22Cl2N4O2)has been synthesized and characterized by elemental analysis, IR, 1H NMR, MS and single-crystal X-ray diffraction. The crystal belongs to the triclinic system, space group Pi with a = 6.891(2), b = 9.074(2), c = 18.258(4)AA, α = 99.292(4), β = 95.105(4), γ = 108.068(3)°, C21H22Cl2N4O2, Mr = 433.33, V= 1059.3(4) Aa, Z = 2, Dc = 1.359 g/cm3, F(000) = 452,μ = 0.331 mm-1, the final R = 0.0448 and wR = 0.0994 for 3727 unique reflections. The dihedral angle between the oxazolidine ring taking an envelope conformation with a local pseudo-mirror and the triazole ring is 27.7(9)°. Weak intermolecular C-H...N hydrogen bonds and π-π interactions exist between the triazole rings of neighboring molecules, forming a three-dimensional network, which stabilizes the crystal structure. The primary biological test shows the target compound has certain fungicidal activity.  相似文献   

20.
许良忠  李伟华  司国栋  李凯  杨双花 《中国化学》2005,23(10):1449-1452
The two compounds 1-[1-(2',4'-dichlorobenzoyl)-1-(3-phenylthiazoidin-2-ylidene)methyl]-1,2,4-triazole (3a) and 1-[1-(4'-fluorobenzoyl)-1-(3-phenylthiazolidin-2-ylidene)methyl]-1,2,4-triazole (3b) were prepared by reaction of phenyl isothiocyanate, 1,2-dibromoethane with a-(1,2,4-triazol-1-yl)-substituted-acetylbenzene. Their structures were identified by means of elemental analysis, IR, and ^1H NMR spectra. The single crystal of compound 3b was also obtained. It crystallizes in triclinic system with space group P1 and a=0.9390(2) nm, b=0.9661(2) nm, c= 1.0929(2) nm, α=111.53(3)°, β= 100.46(3)°, γ= 102.08(3)°, Z=2, V=0.8647(3) nm^3, Dc= 1.407 g/cm^3,μ =0.213 mm^-1, F(000)=380, final R1=0.073. There is obvious potentially weak C-H…Y (Y=N, F, O) intermolecular interaction between the molecules in the crystal lattice, which stabilizes the crystal structure. The result of the biological test showed that the two compounds have certain fungicidal activities.  相似文献   

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