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1.
通过3-乙氧甲酰基-4-羟基-2-氢(甲基)-2H-1,2-苯并噻嗪-1,1-二氧化物与取代嘧啶胺或均三嗪胺的胺解反应,合成了标题化合物。生物活性测定结果表明多数化合物具有较好的除草活性,部分化合物显示好的植物生长调节活性和抗炎免疫活性。  相似文献   

2.
先合成1,2,4-三嗪环,然后并接吡唑环,对标题化合物进行了合成研究。对1,2,4-三嗪环上的硫化反应进行了改进,解决了3个反应活性相近部位的选择性肼解问题;并发现了肼基与乙酸乙酯于室温下反应生成1,3,4- 二唑环的新反应。  相似文献   

3.
研究了3-(1H-苯并三唑-1-亚甲基)-4-氨基-5-巯基-1,2,4-三唑与取代苯甲酸在三氯氧磷催化下的反应,制得10种新的3-(1H-苯并三唑-1-亚甲基)-1,2,4.三唑并[3,4-b]-1,3,4-噻二唑,通过元素分析、IR、 ̄1NMR和MS确证了它们的结构并讨论了其波谱性质。  相似文献   

4.
研究了在氯化氢-乙醇溶液或乙醇溶液中,2,4-二羟基苯乙酮与甲醛和芳胺的Mannich反应,分别得到了5个2,4-二羟基-3-芳氨基甲基苯乙酮和5个8-乙酰基-3-芳基-3,4-二氢-5-羟基-2H-1,3-苯并嗪新化合物。用元素分析、IR、1HNMR、MS、UV确定了它们的结构,并成功地实现了2,4-二羟基-3-芳氨基甲基苯乙酮和8-乙酰基-3-芳基-3,4.二氢-5-羟基-2H-1,3-苯并嗪二类化合物的转化。  相似文献   

5.
合成了新配体1-N-(苯并咪唑-1-乙酰基)-4-苯基-3-氨基硫脲(BPMS),将其与Mn(Ⅱ)、Co(Ⅱ)、Ni(Ⅱ)、Cu(Ⅱ)、Cd(Ⅱ)、Zn(Ⅱ)、UO2(Ⅱ)等金属的醋酸盐反应,合成了7个新配合物。所有化合物均经元素分析、IR、1HNMR和热重分析等表征。红外光谱表明,配体以四齿方式通过烯醇式羰基氧原子、烯醇式硫羰基硫原子以及C=N1和C=N2的氮原子与金属配位  相似文献   

6.
从苯和叔了醇出发,经过3步反应合成得标题化合物,总收率在68%以上。  相似文献   

7.
利用4-羟基-3-酰基(酯基)-2H-1,2-苯并噻嗪-1,1-二氧化物分别与芳基异氰酸酯、苯肼、氯甲酸甲酯和乙二醇反应合成了20种新衍生物,研究了其与异氰酸酯在不同摩尔比碱作用下的加成反应。生物活性测定结果表明,大部分化合物具有较好的除草活性和植物生长调节活性。  相似文献   

8.
通过1-苯基-3-对甲苯磺酰基硫脲(1)与亚磷酸三苯酯和取代苯甲醛在甲苯中进行的类Mannich反应合成1-对甲苯磺酰基-2-氧代-2-苯氧基-3-芳基-1,4,2-二氮磷杂环戊-5-硫酮(2).本文对合成过程中所涉及到的副反应进行了初步探讨,初步的生物活性测定结果表明,化合物2具有一定的除草活性。  相似文献   

9.
以固态反应制备了Zn改性的ZSM-5系列催化剂,用脉冲微反技术评价了丙烷在上述催化剂上的反应活性和芳构化选择性,用吡啶吸附IR和NH_3-TPD对催化剂改性前后的酸性及分布的变化进行了系统的表征,对固态反应制备Zn-ZSM-5的机理进行了讨论。还考查了固态反应条件对Zn ̄(++)迁移到分子筛孔道内并与其强B酸H ̄+发生交换作用的影响,找到了最佳的制备条件及最佳的Zn含量。  相似文献   

10.
通过间苯二胺和三硝基三氯苯反应,再经过硝化、叠氮基取代和热解脱氮环化,合成了题称新化合物。  相似文献   

11.
The electronic absorption spectra of 2-aminopyrimidine (compound I), 2-amino-4-methylpyrimidine (compound II), 2-amino-4,6-dimethylpyrimidine (compound III), 2-amino-4,6-dimethoxypyrimidine (compound IV), 4-amino-2,6-dimethylpyrimidine (compound V), and 4,5-diamopyrimidine (compound VI) have been measured in water and in a series of different organic solvents. The solvent effects on the spectra are discussed and the solvent induced spectral shifts are analyzed in terms of different solute–solvent interaction mechanisms, using the multiple linear regression technique.  相似文献   

12.
刘起军  李宏  周国春 《化学通报》2011,74(6):569-572
2-O-甲基-3,4-O-丙酮叉基-D-葡萄糖酸甲酯(6)的C6羟基用乙酰基保护、C5仲羟基用TBS保护得到化合物8,碳酸钾脱除C6-O-乙酰基时,C5-O-TBS迁移到C6羟基得到了化合物9(74%收率),没有得到目标产物12;将化合物6的C6羟基用TBS保护、C5羟基乙酰基保护的化合物10,四丁基氟化铵脱除C6-O...  相似文献   

13.
A contracted ring degradation product, WYE‐120318 (compound 2), was discovered during the development phase for methylnaltrexone bromide (compound 1) drug substance. The compound was isolated by high‐performance liquid chromatography fractionation, and its structure was determined by spectroscopic data analyses. WYE‐120318 is formed from methylnaltrexone through a benzyl‐benzilic acid type rearrangement reaction to yield an α‐hydroxy‐cyclopentanecarboxylic acid substructure. The proposed structure and the formation mechanism are confirmed by the synthesis of WYE‐120318 from methylnaltrexone (compound 1). A similar benzyl‐benzilic acid type rearrangement reaction can be envisioned as the biological origin of remisporine A (compound 3), a naturally occurring cyclopentadienyl compound that autocatalytically dimerizes to remisporine B (compound 4). The structure of remisporine A was deduced from its dimer 4. Coniothyione (compound 5) can be considered as the first example of a stable natural product bearing the remisporine A skeleton. However, the regiochemistry of the chlorosubstitution in the coniothyrione structure needs to be revised to compound 6 on the basis of the nuclear magnetic resonance data and biogenesis analysis. Copyright © 2012 John Wiley & Sons, Ltd.  相似文献   

14.
建立了一个基于芳叉丙二腈的高活性迈克尔系统2,2′-[(5-叔丁基-2-羟基-1,3-苯撑)二甲川]双丙二腈(1), 能迅速吸收空气中的水, 生成稳定的氧杂迈克尔加成产物2-[5-叔丁基-3?(2,2-二腈基?1-羟乙基)-2-羟基苄叉]丙二腈(2). 在二甲亚砜(DMSO)中, 各种碱性催化剂都能使化合物2脱水生成化合物1, 同时发射红色强荧光. 在PBS缓冲溶液(pH=10)中, 化合物2立即脱水生成化合物1, 随后又缓慢加水转变为化合物2. 加热吸附在硅胶上的化合物2的荧光由蓝色变为红色, 温度降低后荧光又恢复为蓝色. 因此, 吸附了化合物2的硅胶可能发展成为一种热敏荧光材料. 此外, 吸附了化合物1的硅胶还对某些有机蒸汽具有荧光响应.  相似文献   

15.
A new disc-like triphenylamine containing mesogenic compound has been synthesized by the implementation of the Heck and ring-closing metathesis-based reactions in good yield. The designed and synthesized compound showed rectangular columnar mesophase and this is the first report of liquid crystalline phase of the triphenylamine-based compound with an olefinic linkage. The disc-shaped compound exhibited excellent fluorescence properties.  相似文献   

16.
The fluorescent compound N-substituted 2,6-bis(benzimidazol-2-yl)pyidine (1) has been synthesized. The fluorescent characteristics of the compound 1 and 2,6-bis(benzimidazol-2-yl)pyidine (2) and the complexes formed between the two compounds and different metal ions have also been investigated. The results show that the compound 1 possesses a specific ability to form complex with Cu(2+) ion, but the compound 2 have not such a property. It is proposed that the specific recognition ability of compound 1 to Cu(2+) may be attributed to the cyclic configuration of this compound in polar solvent.  相似文献   

17.
合成了一种新型的三苯胺类载流子传输材料三苯胺甲苯二苯腙,通过一系列手段对该化合物性能进行了表征,并以此化合物为载流子空穴传输材料,Y-型酞菁氧钛为载流子产生材料制备了光导器件,测定了该光电器件的光电性能,显示出良好的光电性能(E1/2=1.0lx.s),可以替代常用的载流子传输材料二乙基苯甲醛二苯腙.  相似文献   

18.
Fluoroquinolones are the widely used antibiotics for treating of numerous diseases1-4. Norfloxacin(1-ethyl-6-fluoro-4-oxo-7-(1-piperazinyl)-1,4dihydroquinoline-3-carboxylicacid, NFLX) is a typical member of this family and its metal coordination compounds have also received much more attention5-11. Apart from the synthesis and physicochemical properties of the coordination compounds, their antibacterial properties were also tested7-13, but there was scare report on antitumor properties of th…  相似文献   

19.
The phase diagram of the pentadecanoic acid and urea system consists of a combination of a binary system with two incongruently melting compounds and a system with a miscibility gap of the liquid phases. The first compound is a molecular addition compound of 1 molecule of pentadecanoic acid and 4 molecules of urea, which forms three polymorphic modifications. The second compound is a channel inclusion compound, which is known to be in a ratio of 1:12.2. In addition to the thermoanalytical investigations, FTIR spectroscopic and X-ray diffractometric analyses were also conducted for the inclusion compound as well as the stable form of the molecular addition compound. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   

20.
以3,5-二甲氧基苯甲酸(1)为起始原料, 经过甲醇酯化、氢化铝锂还原、四溴化碳溴代和Wittig-Horner反应,高产率的合成了Wittig-Horner试剂(5). 化合物5与对羟基苯甲醛(6)的羟基保护产物(7)偶联得到化合物(8),后者经去甲氧基亚甲基保护和仿生氧化偶联反应成功地全合成了(E)-脱氢二聚白藜芦醇-11,11′,13,13′-四甲醚(10). 通过1H NMR、13C NMR、IR、HRMS等测试技术确定化合物10为二聚芪类化合物(E)-脱氢二聚白藜芦醇-11,11′,13,13′-四甲醚,总收率48.93%.  相似文献   

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