共查询到20条相似文献,搜索用时 140 毫秒
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本文报道了以(E)-1-(2-对甲苯磺酰胺基)-3-芳基丙-2-烯-1-酮(1)为底物与N-硫代丁二酰亚胺(2)通过亲电环化反应合成2-芳基-3-硫代-2,3-二氢喹啉-4(1H)-酮类化合物。以三氟化硼乙醚为催化剂(20 mol %),1,2-二氯乙烷为溶剂,反应温度为60 oC,可以60-92%的收率得到一系列2-芳基-3-硫代-4(1H)-喹啉酮衍生物,化合物3a-k均未见文献报道,其结构均经过1H NMR, 13C NMR以及高分辨质谱进行确定。 相似文献
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水合茚三酮与芳甲基酮、水合肼缩合环化制得2-芳基-3,4-二氮杂芴酮(2); 2经还原得2-芳基-3,4-二氮杂芴(3).2与2-溴联苯格氏试剂反应得到中间体叔醇(4); 4在酸性条件下关环合成了2-芳基-3,4-二氮杂螺二芴,其结构经1H NMR,13C NMR和元素分析表征. 相似文献
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2-(1,2-亚乙/1,3-亚丙二硫)亚甲基-3-羰基丁酰氯的制备及其与芳烃的酰化反应 总被引:2,自引:0,他引:2
制备了较稳定的2-(1,2-亚乙/1,3-亚丙二硫)亚甲基-3-羰基丁酰氯,并实现了其与芳烃的酰化反应,为1-芳基-2-(1,2-亚乙/1,3-亚丙二硫)亚甲基-1,3-丁二酮的合成提供了一条新途径. 相似文献
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报道了低价钛试剂(TiCl-Zn体系)与(3-氧代-1,3-二芳基)丙基丙二腈的反应.研究发现,低价钛可引起(3-氧代-1,3-二芳基)丙基丙二腈的成环反应,生成2-氰基-3,5-二芳基-1-氨基环戊烯、反式和顺式2-氨基-3-氰基-1,4-二芳基-2-环戊烯-1-醇3种产物,并用X射线衍射法确定了后两种异构体的构型. 相似文献
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1-苯甲酰基-1-甲硫基甲醇(2)与硫脲(3a)和芳基取代硫脲(3b-3i)在弱酸性条件下回流反应1h,得到5-苯基咪唑啉-2-硫酮-4-酮(4a)和1-芳基-5-苯基咪唑啉-2-硫酮-4-酮(4b-4i),产率72%~89%.而化合物2与芳胺(5a-5f)在弱碱性条件下回流反应3h,则得到2-芳胺基-2-甲硫基苯乙酮(6a-6f),产率为64%~88%. 相似文献
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使苯乙酮作为亲核体,在无溶剂条件下,利用碱催化与烯酮发生共轭反应,合成了一系列新的1,5-二芳基二酮化合物.反应温和而方便、快速,收率在71~90%. 相似文献
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The cracking mechanism of 1,1,2-trichloro-1,2,2-trimethyldisilane catalyzed by aluminum chloride is investigated by DFT and MP2 methods. The reactants decompose in two ways, which are competing respons... 相似文献
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Tom Sundermann 《合成通讯》2014,44(11):1641-1648
A novel method for the synthesis of 1-tetrazolylalkan-2-amines and -carbamates via tert-butyl aziridine-1-carboxylates is described. 相似文献
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Consecutive interaction of lithium phenylacetylide with triphenylborane and diphenylchlorophosphine gave 1-diphenylboryl-2-diphenylphosphino-1,2-diphenylethene, which is less reactive than dialkylborylphosphinoethenes.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2, pp. 378–380, February, 1993.The authors are greatful to the Tatarian Commercial-Mediatory Industrial Firm ELAZSNAB for the financial support of this research. 相似文献
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用改进硬脂酸溶胶-凝胶法制备了量子顺电体La1/2Na1/2TiO3纳米晶,用差热-热重分析和X射线衍射测试了样品的晶化过程及物相结构,用FTIR和Raman光谱表征了其谱学特性. 相似文献
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Nikolai V. Zyk Elena K. Beloglazkina Maria A. Belova Stanislav V. Zatonsky Nikolai S. Zefirov 《Phosphorus, sulfur, and silicon and the related elements》2013,188(3):555-565
1-Halo-2-arylthioalk-1-enes, the anti-Markovnikov adducts of 1,2-halosulfenylation of terminal alkynes containing propargyl hydrogen atoms, were found to transform into a mixture of E - and Z -isomers of 1-halo-2-arylthioalk-2-enes under acid catalysis conditions. A plausible mechanism of rearrangement is proposed. The Markovnikov adducts 2-halo-1-arylthioalk-1-enes were partially converted into their cis -form under similar conditions. The halosulfenylation products of 1-phenylpent-1-yne did not show the signs of double-bond migration in the presence of an acid; only partial isomerization of the E - to the Z -isomers took place. 相似文献
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Structural Characterization and Thermal Properties of 1-Amino-1-ethylamino-2,2-dinitroethylene 下载免费PDF全文
1-amino-1-ethylamino-2,2-dinitroethylene (AEFOX-7) was synthesized by the reaction of 1,1-diamino-2,2-dinitroethylene (FOX-7) and ethylamine aqueous solution at 92 oC. The the-oretical investigation on AEFOX-7 was carried out by B3LYP/6-311++G**method. The IR frequencies and NMR chemical shifts were performed and compared with the experi-mental results. The thermal behavior of AEFOX-7 was studied with differential scanning calorimetry and thermal gravity-derivative thermogravimetry methods, and can be divided into a melting process and an exothermic decomposition process. The enthalpy, apparent activation energy and pre-exponential factor of the exothermic decomposition reaction were obtained as 374.88 kJ/mol, 169.7 kJ/mol, and 1019.24 s-1, respectively. The critical temper-ature of thermal explosion of AEFOX-7 is 145.2 oC. The specific heat capacity of AEFOX-7 was determined with micro-DSC method and theoretical calculation method, and the molar heat capacity is 214.50 J/(mol K) at 298.15 K. The adiabatic time-to-explosion of AEFOX-7 was calculated to be a certain value between 1.38-1.40 s. The thermal stability of AEFOX-7 is much lower than that of FOX-7. 相似文献
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在pH=3的水溶液中,以2,6-吡啶二甲酸(H2L1)为第一配体,分别以α-吡啶甲酸(HL2)和1,10-邻菲啰啉(L3)为第二配体,与GaCl3反应得到了两种新的镓(Ⅲ)三元固体配合物.元素分析、红外、紫外-可见、核磁、热分析和摩尔电导等测试表明,此两种化合物均为非电解质,组成分别为[Ga(L1)(L2)(H2O)]·H2O和[Ga(L1)(L3)Cl ]·H2O,其中2,6-吡啶二甲酸以三齿形式,α-吡啶甲酸、1,10-邻菲啰啉以二齿形式与Ga3+配位.对大肠杆菌、金黄色葡萄球菌和枯草杆菌的抑菌活性实验表明,配合物在较高浓度下对3种菌均有一定的抑菌活性,而对金黄色葡萄球菌的抑制作用则较配体更强. 相似文献
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含肟醚的新型三唑并嘧啶衍生物的合成及除草活性研究 总被引:1,自引:0,他引:1
2-巯基-5,7-二甲基-1,2,4-三唑并[1,5-a]嘧啶(6)与氯乙醛或氯丙酮反应生成5,7-二甲基-1,2,4-三唑并[1,5-a]嘧啶-2-硫丙酮(硫乙醛) (7). 中间体7与O-烷基(芳基)羟胺(5)反应得到目标化合物1-(5,7-二甲基-1,2,4三唑[1,5-a]嘧啶-2-硫)乙醛-O-烷基肟醚(9), 2-(5,7-二甲基-1,2,4三唑[1,5-a]嘧啶-2-硫)丙酮O-烷基肟醚(10). 初步生物活性测试结果表明部分化合物具有较好的除草活性. 相似文献
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合成了金(Ⅲ)与2,2′-联吡啶-1,1′-二氧化物(bipyO_2)形成的三种新化合物:[H(bipyO_2)][AuCl_4]、[Au(bipyO)Cl_2]Cl和[Au(bipyO_2Br_2]Br。用元素分析、摩尔电导、紫外和红外光谱以及综合热分析等方法测定了它们的组成和性质,并对其结构进行了讨论。实验结果表明,三种化合物均为1:1型电解质,化合物(Ⅰ)是bipyO_2与H~+通过氢键形成[H(bipyO_2)]~+阳离子,(Ⅱ)和(Ⅲ)则为bibpyO_2与Au(Ⅲ)直接螯合组成七原子环的混合配体配阳离子[Au(bipyO_2)X_2]~+,X=Cl~-或Br~-。 相似文献