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本文介绍了3,3'-(苯亚甲基)双吲哚的制备和柱层析分离实验的原理和操作步骤。该实验具有以下特点:(1)反应时间短,30min左右便可完成;(2)产物为粉红色,在进行硅胶板层析和层析柱时比较直观,适合于学生的实验教学;(3)反应物、催化剂和产物的极性相差很大,容易进行柱层析分离产物。该实验特别适合于综合性大学和地方高等师范院校化学和相关本科专业的"有机化学实验"或"综合化学实验"进行开设。 相似文献
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本文介绍了3,3’-(苯亚甲基)双吲哚的制备和柱层析分离实验的原理和操作步骤。该实验具有以下特点:(1)反应时间短,30min左右便可完成;(2)产物为粉红色,在进行硅胶板层析和层析柱时比较直观,适合于学生的实验教学;(3)反应物、催化剂和产物的极性相差很大,容易进行柱层析分离产物。该实验特别适合于综合性大学和地方高等师范院校化学和相关本科专业的"有机化学实验"或"综合化学实验"进行开设。 相似文献
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发展了一种钯和布朗斯特酸接力催化下2-吲哚甲醇与邻氨基苯乙炔的串联反应,高收率地合成了结构多样的3,3′-双吲哚衍生物(33个样品,产率高达98%)。该反应具有较好的实用性,不仅能够放大至克级规模,同时产物还可以进行合成转化。更为重要的是,本文通过控制实验详细研究了接力催化体系中两个催化剂活化底物的模式。该反应为接力催化策略在2-吲哚甲醇参与的串联反应中的应用提供了有益的借鉴,也为合成3,3′-双吲哚衍生物提供了高原子经济性的策略。 相似文献
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A convenient synthesis of 1-alkyl-2-chloro-1H-indole-3-carbaldehyde oximes(5a―5d) and 1-alkyl-2-phenoxy-1H-indole-3-carbaldehyde oximes(6a―6d) from 2-indolone was completed via the Vilsmeier-Haack reac-tion,with N-alkylation and oximation as the key steps.An improved one-pot method for the synthesis of 1-alkyl-2-alkoxy-1H-indole-3-carbaldehyde oximes(7a―7h) from 1-alkyl-2-chloro-1H-indole-3-carbaldehydes(3a―3d) was described.The Williamson reactions and esterification reactions were performed and the oxime-... 相似文献
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Ming Ming Yu Xia Li Miao Luan Jun Na Gao Qiu Zhi Shi Ming Sheng Tang Liu He Wei 《中国化学快报》2010,21(10):1157-1161
<正>An improved strategy for the synthesis of 3,3'-(oxy-p-phenylene)bis(2,4,5-triphenylcyclopentadienone) was developed,which includes three steps:Friedel-Crafts reaction,oxidation and condensation.Importantly,the use of KMnO_4 made the second step simple and efficient,which has potential application to synthesis of bis(cyclopentadienone)s.The course of oxidation has been confirmed by isolated intermediates. 相似文献
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首次报道了一个新的拟酶模型物--双[N,N'-1,2-亚乙基-2,2'-(苯基亚甲基)二(3,4-二甲基吡咯-5-醛缩亚胺)]合双锰的合成方法及光谱特征;并对用PhIO单加氧化环己烷反应的催化性能及自氧化反应进行了研究.结果表明,此Schiff碱双锰配合物的催化性能及稳定性与金属卟啉TPPMnCl相似. 相似文献
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1-苯基-3-(3'-吲哚基)-5-取代苯基-2-吡唑啉的合成及1H NMR和MS中的取代基效应 总被引:1,自引:0,他引:1
J-(3'-吲哚基)-3-取代苯基-2-丙烯-1-酮与茉肼反应,合成了10种新的1-苯基-3-(3'-吲哚基)-5-取代苯基-2-吡唑啉衍生物,其结构通过各种波谱证实.讨论了此系列化合物1HNMR和Ms中的取代基效应,得出取代基常数σ或σ+与质子化学位移,碎片相对丰度之间存在着良好的线性关系. 相似文献
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The compound 3,3'-(anthracene-9,10-diyl)bis(1-phenylpropan-1-one)(C32H26O2,Mr=442.55) has been synthesized by the reaction of 2,2'-(anthracene-9,10-diylbis(methy-lene))bis(1,3-diphenylpropane-1,3-dione) with CsCO3,and its structure was characterized by 1H NMR and single-crystal X-ray diffraction.The crystal of the title compound belongs to monoclinic,space group P21/c with a=9.154(3),b=5.2777(16),c=24.897(7) nm,β=107.337(10)°,Z=2 and V=1.1482 nm3.X-ray analysis indicates that an intermolecular hydrogen bond C(8)-H(8A)…O(1),weak C-H···π between H(9A) and the centre of anthracene rings and weak π-π interactions between two anthracene ring planes are observed. 相似文献
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The use of bisindenyl zirconium dimethyl in the synthesis of the corresponding dihalides is described. The synthesis of Ind2ZrCl2 has been carried out, cleanly and quantitatively, by chlorination of Ind2ZrMe2 (2) with a variety of inorganic chlorides, including BCl3, SCl2 in either toluene or methylene chloride, and HCl in Et2O. The latter method is the preferred one, since it produces methane as the only byproduct, and the formed Ind2ZrCl2 precipitates quantitatively from the Et2O solvent: a simple filtration then gives the analytically pure product in quantitative yield. Ind2ZrBr2 and Ind2ZrI2 are obtained by reacting 2 with Br2 and I2, respectively. The ‘inverse’ synthesis of metallocene dichlorides by chlorination of their dimethyl ‘derivatives’ has advantages compared to the classic method: first, Ind2ZrCl2 is obtained in higher yield (90-96%); second, it is easier to purify (at the dimethyl stage) and is obtained free from LiCl. Five bisindenyl zirconium complexes with different sigma ligands have been investigated in solution propylene polymerizations: it is found that the σ-ligands have no relevant influence on the catalyst activity, nor on the polymer properties. 相似文献