- IMIDAZOLE COMPOUND
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PROBLEM TO BE SOLVED: To provide an imidazole compound which has: good solubility in raw materials when synthesizing a resin; and good reactivity in a dimerization-cleavage reaction in the resin. SOLUTION: The imidazole compound of the present invention i
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Paragraph 0140-0142
(2021/02/09)
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- A sustainable approach towards the three-component synthesis of unsubstituted 1H-imidazoles in the water at ambient conditions
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A green protocol for the synthesis of unsubstituted imidazoles has been demonstrated herein. The reaction is realized using commercially available lipase enzyme, porcine pancreas lipase (PPL) in water. The reaction conditions are selective and mild which helped to tolerate a wide variety of functional groups to give the desired products in good chemical yields. (Figure presented.).
- Kapale, Suraj S.,Chaudhari, Hemchandra K.,Mali, Suraj N.,Takale, Balaram S.,Pawar, Hitesh
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p. 712 - 716
(2020/05/22)
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- Intramolecular charge transfer ampholytes with water-induced pendulum-type fluorescence variation
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Triphenylimidazole-based ampholytes with intramolecular charge transfer were designed with the introduction of carboxyl groups. In solution, the synergistic solvent and ionization effects on the ampholytes led to a unique pendulum-type fluorescence variation during the water content increasing process. Among them, 4-(4,5-bis(4-hydroxyphenyl)-1H-imidazol-2-yl)benzoic acid showed the most prominent three-step fluorescence switching property.
- Dong, Xiao-Bin,Chen, Ling,Pan, Mei,Huang, Wen-Jie,Xiang, Hua,Wang, Hai-Ping,Mo, Zong-Wen,Ye, Jia-Wen,Zhang, Kun,Chen, Xiao-Ming
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supporting information
p. 10702 - 10705
(2020/10/05)
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- Fluorescent compound, preparation method and application thereof
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The invention discloses a fluorescent compound, a preparation method and application thereof. The fluorescent organic compound is 4-((4, 5-diphenyl)-1H-imidazole-2-yl)benzoic acid, 4-(4, 5-bis(4-fluorophenyl)-1H-imidazole-2-yl)benzoic acid or 4-(4, 5-bis(4-hydroxyphenyl)-1H-imidazole-2-yl)benzoic acid. Fluorescence emitted by the fluorescent organic compound in an organic solvent presents pendulumtype change along with the change of the water content of the organic solvent, and can be used for efficiently and sensitively detecting the water content of the organic solvent; meanwhile, the fluorescent compound can also be dispersed in a porous medium to prepare an anti-counterfeiting material. The fluorescent organic compound can be prepared through a one-pot method, the preparation method is simple, and the yield is very high.
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Paragraph 0036; 00037; 0038; 0039; 0040; 0041
(2020/09/16)
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- Synthesis and characterization of nano-copper ferrite as a magnetically separable catalyst for the one-pot synthesis of 2,4,5-trisubstituted and 1,2,4,5-tetrasubstituted imidazoles under solvent-free condition
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The authors report herein, synthesis and characterization of nano-copper ferrite as a recoverable, ecofriendly, inexpensive, and readily available catalyst for efficient, simple, and green synthesis of multisubstituted imidazoles. Short reaction times, high yields, easy workup, and mild condition are the advantages of this protocol. The catalyst can be reused without evident loss of the catalytic activity. Characterization of the catalyst was performed fully by Fourier transform infrared spectra, X-ray diffraction, FESEM, electron dispersive X-ray, and vibration sampling magnetometer analyses.
- Nemati, Firouzeh,Elhampour, Ali,Bagheri Natanzi, Mahshid
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p. 666 - 671
(2017/08/10)
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- An efficient ICT based fluorescent turn-on dyad for selective detection of fluoride and carbon dioxide
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A new intramolecular charge transfer (ICT) based fluorescent turn-on ratiometric probe 2 (D-π-A type) has been designed and synthesized by bridging imidazole (donor, D) and benzothiazole (acceptor, A) moieties through a phenyl ring. The photophysical beha
- Ali, Rashid,Razi, Syed S.,Gupta, Ramesh C.,Dwivedi, Sushil K.,Misra, Arvind
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p. 162 - 170
(2016/01/12)
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- Study on the synthesis and structure-effect relationship of multi-aryl imidazoles with their fluorescence properties
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In this paper, 23 multi-aryl imidazole derivatives were synthesized and identified by nuclear magnetic resonance, ultraviolet-visible and elemental analysis. At the same time, their ultraviolet-visible maximum absorption (λabmax), fluorescence emission maximum (λemmax) and quantum yields (Cyrillic capital letter eff) were measured. The relationships between the optical behaviors and structures for these compounds were assessed. The results show that the λmaxab and λmax em are red-shifted and the fluorescence Cyrillic capital letter eff are increased by the introduction of electron-withdrawing substituents and the increase in the planarity of multi-aryl imidazole molecules. The results also showed that the fluorescence quantum yields of the compounds containing two imidazole nuclei are double the corresponding mono-imidazole nucleus compounds. Copyright
- Tian, Mi,Wang, Chao,Wang, Ligong,Luo, Kai,Zhao, An,Guo, Cancheng
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p. 540 - 548
(2014/07/22)
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- Crystal structures and solution spectroscopy of lophine derivatives
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Lophine (2,4,5-triphenylimidazole) derivatives were synthesized and their physicochemical properties were determined. Spectroscopic and fluorescence behavior of lophine derivatives in methanol at different pH and various solvents were presented. The observed spectroscopic features in the solution are determined by specific interactions of the NH hydrogen. These kinds of interactions are manifested both in the solid state and in solution. The crystal and molecular structures of lophine derivatives with different solvents of crystallization are presented and discussed. In all solvates the solvent molecules link host molecules through hydrogen bonds.
- Fridman, Natalya,Kaftory, Menahem,Eichen, Yoav,Speiser, Shammai
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experimental part
p. 101 - 109
(2009/04/07)
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