- Synthesis and electrochemical polymerization of a novel 2-(thiophen-2-yl)-4-(thiophen-2-ylmethylene)oxazol-5(4H)-one monomer for supercapacitor applications
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In this study, the organic synthesis, electrochemical polymerization and electrochemical characterization of a novel 2-(thiophen-2-yl)-4-(thiophen-2-ylmethylene)oxazol-5(4H)-one, 3, monomer have been reported for supercapacitor applications. Electrode active material was formed electrochemically coating of poly(2-(thiophen-2-yl)-4-(thiophen-2-ylmethylene)oxazol-5(4H)-one) (PTTMO) on pencil graphite electrode (PGE). Electrochemical polymerization was carried out by chronoamperometric (CA) technique in an acetonitrile (ACN) solution containing 0.01 M monomer and 0.10 M tetrabuthylammonium perchlorate (TBAP). The prepared PGE/PTTMO electrode has been monitored by scanning electron microscopy (SEM). Electrochemical properties of the electrode have been investigated by CV, electrochemical impedance spectroscopy (EIS), galvanostatic charge-discharge and repeating chronopotentiometry (RCP) techniques with two or three electrode systems. PGE/PTTMO has exhibited a capacitive performance with highest specific capacitances of 193.00 F g- 1 at a scan rate of 10 mV s- 1. On the other hand, the electrode has shown good charge-discharge cycling stability with the retained ratio about 90.83%.
- Hür, Evrim,Arslan, Anda?,Hür, Deniz
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- Visible-Light-Induced C(sp2)-P Bond Formation by Denitrogenative Coupling of Benzotriazoles with Phosphites
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A visible-light-induced denitrogenative phosphorylation of benzotriazoles is presented, in which diverse substituted aryl phosphonates could be obtained in good to excellent yields. This efficient protocol exhibits good tolerance with various functional g
- Jian, Yong,Chen, Ming,Huang, Binbin,Jia, Wei,Yang, Chao,Xia, Wujiong
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supporting information
p. 5370 - 5374
(2018/09/13)
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- Iridium diamine catalyst for the asymmetric transfer hydrogenation of ketones
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A simple and very efficient chiral aqua iridium(III) diamine complex leads to excellent enantioselectivities in the asymmetric transfer hydrogenation of various α-cyano and α-nitro ketones. The catalyst provides the ortho-substituted aromatic alcohols with especially high ee values. The diamine ligands can be used directly as chiral ligands; conversion into the corresponding sulfamide is not necessary.
- Vazquez-Villa, Henar,Reber, Stefan,Ariger, Martin A.,Carreira, Erick M.
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supporting information; experimental part
p. 8979 - 8981
(2011/11/30)
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- Preparation of polyfunctional acyl azides
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(Chemical Equation Presented) A general synthesis of acyl azides from the corresponding N-acyl benzotriazoles is described. The procedure affords acyl azides in good yields and avoids the use of acid activators and NO+ equivalents typically emp
- Katritzky, Alan R.,Widyan, Khalid,Kirichenko, Kostyantyn
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p. 5802 - 5804
(2008/02/09)
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- Efficient microwave access to polysubstituted amidines from imidoylbenzotriazoles
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Microwave reactions of primary and secondary amines with imidoylbenzotriazoles 6a-w gave diversely substituted amidines 7a-Aa in 76-94% yields. Convenient preparations of a variety of amides 5a-Ab (87-96%) and imidoylbenzotriazoles 6a-w (56-95%) have also been developed using microwave irradiation under mild conditions and short reaction times. These results demonstrate further the advantages of microwave synthesis and introduce a new application of imidoylbenzotriazoles in the preparation of polysubstituted amidines.
- Katritzky, Alan R.,Cai, Chunming,Singh, Sandeep K.
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p. 3375 - 3380
(2007/10/03)
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- Expedient acylations of primary and secondary alkyl cyanides to α-substituted β-ketonitriles
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Primary and secondary cyanides are efficiently acylated with N-acylbenzotriazoles 3a-f (derived from a variety of acids) to afford the corresponding α-substituted β-ketonitriles 5a-r in 67-96% yields.
- Katritzky, Alan R.,Abdel-Fattah, Ashraf A. A.,Wang, Mingyi
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p. 4932 - 4934
(2007/10/03)
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- Efficient Conversion of Carboxylic Acids into N-Acylbenzotriazoles
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An improved one-pot procedure for the preparation of N-acylbenzotriazoles involves mild reaction conditions and allows the preparation of several derivatives not accessible by the previously reported methods.
- Katritzky, Alan R.,Zhang, Yuming,Singh, Sandeep K.
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p. 2795 - 2798
(2007/10/03)
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- Polycyclic heteroaromatics from reactions of acylbenzotriazoles with aryl isocyanates
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N-Acylbenzotriazoles react with aryl isocyanates to form, depending on the type of acyl group, compounds based on five different classes of polycyclic heteroaromatics. Higher alkanoyl-, acetyl-, acetoacetyl-, aroyl-, and cinnamoylbenzotriazoles yield, respectively, derivatives of quinoline, pyrimidino[5,4-c]quinoline, benzo[b]-1,8-naphthyridine, phenanthridine, and indolo[2,3-b]quinoline by incorporating 3, 3, 4, 2, and 2 molecules, respectively, of the isocyanate per acylbenzotriazole molecule.
- Katritzky,Huang,Voronkov,Steel
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p. 8069 - 8073
(2007/10/03)
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