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1.
11NTRODUCTIoNThederivativesofdiazaphospholidinoneorthecorrespondingthionesareknowntopossessinterestingbiologicalproperties,suchasherbicidalactivity"'2i.Inrecentyears,itwasreportedthatthel,4,2-diazaphospholindine-5-thione-2havegoodselectiveherbicidalactivity"'41.Tolookformoreeffectiveherbicideswithlowtoxicity,aseriesofnovel1-(o-methylphenyl)-2-(p-methoxyphenyl)-phospholidin-4-thione-sulfideshavebeensynthesizedandtheirmolecularstructuresstudied.PreliminarybioassaysshowthatthesecomPoundshaveg… 相似文献
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CrystalandMolecularStructureof3,4-diphenyl-5-methyl-5-propyl-1,3,4-diazaphospholidin-2-thione-4-sulfide¥FengKe-Sheng;ChenRu-Y... 相似文献
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CrystalandMolecularStructureof3,4-diphenyl-5-ethyl-5-methyl-1,3,4-diazaphospholidin-2-thione-4-oxide¥FengKe-Sheng;ChenRu-Yu(I... 相似文献
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1INTRODUCTIONLawess0n,Sreagent(LR),2,4-Bis(4-meth0xyphenyl)-1,3,2'4-dithiadiphosphetane-2,4-disulfide,notonlyisaselectivereagentf0rthi0natingcar-bonylcompounds,buta1soreactswithcertainsubstratestogivephosph0rushetero-cyclecompoundswhichcontainthe(4-methoxyphenyl)phosphinothi0ylidene"4-CH,OC,H'P(S)"m0iety.Theseheterocycliccompoundshavesomepotentialbiologi-calactivitiesasherbicides,fungicides,andinsecticides[l'2J.Wehavestudiedthecy-clizationofthebifunctionalsubstrateswithLRtogive5-and6… 相似文献
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SHEN Xiao-Qing a LIU Hong-Lei a ZHANG Hong-Yun②a ZHANG Hong-Quan b MAO Hong-Yan a WU Qing-An a ZHU Yu a HOU Hong-Wei a a 《结构化学》2005,24(10):1211-1216
1 INTRODUCTION Both phosphorus and sulfur are the non-metal ele- ments rich in biological bodies. Phosphorus is the core element of nucleic acid, which is the principal ingredient of lives; and sulfur is the important ele- ment in the skeleton of nitrogen-fixing enzyme’s activity center[1]. It has been found that LR, 4-bis(4- methoxyphenyl)-1,3,2,4-dithiadiphosphe-tane-2,4- disulfide (Scheme 1), is an effective thiation reagent for ketones, carboxamides, esters, S-substituted thio- est… 相似文献
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本文研究了苯基硫脲、苯基二氯化膦与脂肪醛(酮)在无水苯中进行的类Mannich反应,在分离产物时发现,除了生成3,4-二苯基-4-氧代-1,3,4-二氮磷杂环戊-2-硫酮(Ⅰ)外,还得到了少量3,4-二苯基-4硫代-1,3,4-二氮磷杂环戊-2-硫酮(Ⅱ).根据化合物Ⅱ的生成及31PNMR跟踪反应的结果,得出反应机理为P-H键对亚胺衍生物的加成.通过X射线衍射分析发现,化合物Ⅰ和Ⅱ的五元杂环均为平面结构,其平面性受4位氧代或硫代的影响较大. 相似文献
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CrystalStructureof3-[(α-Phenyl)triphenylgermylethyl]-4-phenyl-Δ~2-1,2,4-triazoline-5-thioneChenRu-Yu;LiFeng-Fu(InstituteofEle?.. 相似文献
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1 INTRODUCTION The quinone structure is common in numerous natural products that are associated with antitumor, antibacterial, antimalarial, and antifungal activities[1]. A variety of heterocyclic quinones containing dif- ferent heteroatom substituents could exhibit such activities through different actions and sometimes even improve the activities[2~5]. On the other hand, organophosphorus compounds continue to receive widespread attention due to their ubiquity in biological systems[6, 7]… 相似文献
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1-苯基-3-甲基-4-(6-氢-4-甲基氨基-5-硫杂-2,3-吡嗪)-吡唑啉酮的合成与晶体结构 总被引:1,自引:0,他引:1
通过1-苯基-3-甲基-4-氯乙酰基-吡唑啉酮-5 (PMCP) 和4-甲基氨基硫脲 (MTSC) 缩合, 形成了一种新的双杂环化合物 (PMCP-MTSC)。利用元素分析与单晶X-射线衍射进行了表征。 该化合物(C14H15N5OS)属单斜晶系, P21 空间群, 晶体学参数为 a = 7.634(1), b = 11.639(2), c = 8.150(2) ? ?= 98.13(1), V = 716.9(2) ?, Z = 2, Dc = 1.396 g/cm3, (MoKa) = 0.232 mm-1, F(000) = 316, Mr = 301.37。结构由直接法解出,共收集3114个衍射点,其中I > 2(I)的独立衍射点有2453个,用全矩阵最小二乘法修正,最终偏离因子:R = 0.0294, wR = 0.0738。结构分析表明: 该化合物以酮式存在,分子间通过氢键作用(N(5)H…O)连接起来并形成一维链状结构。 相似文献
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1 INTRODUCTIONα Thiocarbonylthioformamidesweresynthesizedin 1 980 [1~ 2 ],however,therewasnoreportontheirpropertiesandreactionactivities[3].Wereportedthereactionofα thiocarbonylthioformamidespreviously[4 ].Here ,wereportthesynthesisof 2 morpholinylthioformyl 2 pheny… 相似文献
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SynthesisandCrystalStructureof1,5-Bis(1'-phenyl-3'-methyl-5'-pyrazolone-4')-1-(4'-aminobutand-1'-imino)-5-pentaneone¥YangLu-Q... 相似文献
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2-(4-Decarboxydehydroabietyl)-5-p-toyl-[1,3,4]-oxadiazole, C28H34N2O, has been synthesized and characterized by IR, NMR, elemental analysis and single-crystal X-ray diffraction method. The crystal belongs to the orthorhombic system, space group P212121 with a = 6.1351(5), b = 14.8495(19), c = 25.9050(2) A, V = 2360.0(4) A3, Z = 4, Mr = 414.57, Dc = 1.167 Mg/m^3, 2 = 0.71073 A,μ(MoKa) = 0.070 mm^-1, F(000) = 896, the final R = 0.0452 and wR = 0.1076 for 1647 observed reflections with I 〉 2σ(I). There are five rings in the crystal structure of the title compound, but the oxadiazole ring is non-coplanar with the benzene ring D. 相似文献
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1 INTRODUCTION The pyrrole ring constitutes a basic heteroaro- matic structure. It is a vital building block for the construction of porphyrins and alkloids[1]. Several substituted pyrroles have potential applications as fungicides and bactericides and as active compo- nents of nonsteroidal anti-inflammatory drugs inhi- biting human cyclooxygenase[2, 3]. Besides the clas- sical Knorr’s method, there are a number of poten- tially useful methods for the synthesis of pyrrole he- terocyclic … 相似文献
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(R)—四氢噻唑—2—硫酮—4—羧酸的合成及其晶体结构 总被引:3,自引:3,他引:3
由L-半胱氨酸盐酸盐与二硫化碳在NaOH及CuSO4.H2O存在下反应得到(R)-四氢噻唑-2-硫酮-4-羧酸,「α」^20D-87.5°,产率66%。用X射线衍射法测得其晶体结构,属正交晶系,Pz1z1z1空间群,晶体学参数:α=0.5029(2)nm,b=0.77499(5)nm,c=1.6300(5)nm,V=0.6350(5)nm^3,Z=4。用分子轨道方法研究了该化合物的电子结构,得到其 相似文献
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1 INTRODUCTION The transition metal complexes with dmit ligand together with their derivatives have received signi- ficant attention due to their metallic-like electronic properties[1~8]. More recently, our researches show that they may be the new kind… 相似文献
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1 INTRODUCTION With the development of diode-pumped solid-sta- te lasers, the research to find more efficient materials for these lasers is gaining more importance. The luminescent materials host LnMgB5O10 may become potential solid-state laser materials[1, 2]. Nd3 -doped GdMg(BO2)5 as a potential diode-pumped laser crystal has been grown in our lab and characterized by a very strong absorption at near 808 nm and intense emission. Although the previous work repor- ted LaMg(BO2)5 with… 相似文献
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4-苯基-2-苯偶氮基-1-硫代-3,4-二氮唑硫酮-5的合成和晶体结构 总被引:1,自引:0,他引:1
4-苯基-2-苯偶氮基-1-硫代-3,4-二氮唑硫酮-5(C14H10N4S2)是双硫腙与二硫化碳发生加成闭环反应时获得。结构通过单晶X-射线衍射法确定,标题化合物是单斜晶系, 空间群为C2/c,晶胞参数a = 25.169(5), b = 3.9690(8), c = 30.130(6) ?,β= 113.79(3)°, V = 2754.0(1)?3, Mr =298.38, Dc =1.439 g/cm3 , Z = 8, μ(MoKα)=3.80cm-1, F(000)=1232 。最终偏差因子为R = 0.0335, wR = 0.0861。分子结构中硫代二氮唑五员杂环显示出共平面结构,最大偏差0.010(1)?。C=S键长1.634(2) 相似文献
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T. V. Rybalova V. F. Sedova I. Yu. Bagryanskaya Yu. V. Gatilov O. P. Shkurko 《Chemistry of Heterocyclic Compounds》2001,37(2):206-211
The crystal structures of 6-chloro-4-nitro-2-phenylpyrimidine and 6-chloro-2-phenylpyrimidine have been determined using X-ray diffraction. The effect of the nitro group and the endocyclic nitrogen atoms on the geometric parameters of the 2- and 4-nitropyrimidine molecules, and also related -nitroazines are compared. 相似文献
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YE Ya-Zhen XU Li 《结构化学》2008,27(1):75-77
[K(2,2,2-crypt]2HP11 has been prepared from the reaction of K3P11 with the mixed ethylenediamine/2,2,2-crypt solution. The crystal structure was determined by singlecrystal X-ray diffraction. The crystal is of tdgonal system, space group P^-3c1 with a = 12.068(2), b = 12.068(2), c = 22.319(6)A, V = 2815.0(10)A^3, Dc = 1.384 g/cm^3, C36h73K2N4O12P11, Mr = 1172.85, F(000) = 1232,μ = 0.536 mm^-1, Z= 2, R = 0.0678 and wR = 0.2211 for 1763 observed reflections (I 〉 2σ(I)). In this compound, the P11 cluster has ideal 32-D3 symmetry, and the three-fold axis, corresponds to the crystallographic c axis. The (HP11)^2- anions are stable due to the completely sequestered alkali metal cations through only ion-ion interactions. 相似文献