53847-33-9Relevant academic research and scientific papers
Copper-Catalysed Electrophilic Amination of Aryl(alkenyl) Boronic Acids with Nitrogen-Containing Hypervalent Iodine (III) Reagent
Hu, Yuanyuan,Zheng, Songlin,Fan, Wu,Yuan, Weiming
supporting information, p. 4701 - 4707 (2021/08/23)
A copper-catalysed electrophilic N-imination of aryl(alkenyl) boronic acids with a stable hypervalent iodine(III) reagent containing a transferable (diarylmethylene)amino group is developed. The electrophilic C?N cross-coupling reaction proceeds smoothly at room temperature under oxidant-free and base-free conditions, which is further characterized by the broad functional group compatibility, thereof, extending the N-electrophile scope of electrophilic C?N cross-coupling outside the limitation of N?O and N?Cl reagents. (Figure presented.).
COMPOUND, COATING COMPOSITION COMPRISING SAME, ORGANIC LIGHT-EMITTING DEVICE USING SAME AND METHOD FOR PREPARING SAME
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Paragraph 0243-0246, (2020/03/01)
The present specification relates to a compound of Chemical Formula 1, a coating composition including the compound of Chemical Formula 1, an organic light emitting device using the same, and a method for manufacturing the same.
An expedient one-pot synthesis of benzophenone Schiff bases from benzene
Akhrem, Irena S.,Afanas'eva, Lyudmila V.,Avetisyan, Dzhul'etta V.,Artyushin, Oleg I.,Kagramanov, Nikolai D.
, p. 238 - 240 (2020/05/25)
A simple and efficient one-pot synthesis of benzophenone Schiff bases from benzene, CCl4 and aromatic amines was developed based on the the reaction of benzene with CCl4·AlCl3 complex. This method affords Ph2CCl2 as well as the products of its subsequent reaction with aromatic amines, benzophenone Schiff bases, selectively and in good yields.
A practical and scalable process for the preparation of 4-aminophenylboronic acid pinacol ester
Xue, Feng,Li, Chang-Gong,Zhu, Yong,Lou, Tian-Jun,He, Guang-Jie
, p. 2739 - 2744 (2015/02/19)
A practical process has been developed for scalable preparation of 4-aminophenylboronic acid pinacol ester through facile two-step procedure. After boron trifluoride etherate efficiently activated the reaction of 4-bromoaniline with diphenyl ketone, metalation reaction of protected 4-bromoaniline with lithium trialkylmagnesiate readily proceeded under mild conditions (-20 °C), which was subsequently subjected to esterification and deprotection reaction to give the 4-aminophenylboronic acid pinacol ester. The improved synthetic route has been successfully scaled up to kilogram quantities in good yield and high quality.
Process for the preparation of aminoaryl- and aminoheteroaryl boronic acids and esters
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Paragraph 0051-0052; 0056-0057, (2014/11/27)
The present invention relates to a process for the preparation of aminoaryl- and aminoheteroaryl boronic acids and esters of formula (I) in high yields The claimed process uses diarylketal formula (V) to generate an arylbromid of formula (III) in which the amino-group is protected as bisarylmethylidenimino-group:
PROCESS FOR THE PREPARATION OF AMINOARYL- AND AMINOHETEROARYL BORONIC ACIDS AND ESTERS
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Page/Page column 14; 15; 16; 17, (2014/12/09)
The present invention relates to a process for the preparation of aminoaryl- and aminoheteroaryl boronic acids and esters thereof of formula (I) in high yield. The claimed process uses diarylketal formula (V) to generate an arylbromide of formula (III) in which the amino-group is protected as bisarylmethylidenimino-group, which is then transformed into a formula (I) compound.
Facile synthesis of triarylmethanimine promoted by a lewis acidbase pair: Theoretical and experimental studies
Liu, Yan,Yang, Qiwu,Hao, Dongling,Zhang, Wenqin
, p. 1390 - 1395,6 (2020/09/02)
An efficient method for triarylmethanimine synthesis promoted by a Lewis acidbase pair (AlCl3Et3N) was designed using mechanistic analysis with the aid of density functional theory. A series of triarylmethanimines were successfully prepared under mild con
Hydride, hydrogen, proton, and electron affinities of imines and their reaction intermediates in acetonitrile and construction of thermodynamic characteristic graphs (TCGs) of imines as a molecule ID card
Zhu, Xiao-Qing,Liu, Qiao-Yun,Chen, Qiang,Mei, Lian-Rui
scheme or table, p. 789 - 808 (2010/04/29)
(Chemical Equation Presented) A series of 61 imines with various typical structures were synthesized, and the thermodynamic affinities (defined as enthalpy changes or redox potentials in this work) of the imines to abstract hydride anions, hydrogen atoms, and electrons, the thermodynamic affinities of the radical anions of the imines to abstract hydrogen atoms and protons, and the thermodynamic affinities of the hydrogen adducts of the imines to abstract electrons in acetonitrile were determined by using titration calorimetry and electrochemical methods. The pure heterolytic and homolytic dissociation energies of the C=N π-bond in the imines were estimated. The polarity of the C=N double bond in the imines was examined using a linear free-energy relationship. The idea of a thermodynamic characteristic graph (TCG) of imines as an efficient Molecule ID Card was introduced. The TCG can be used to quantitatively diagnose and predict the characteristic chemical properties of imines and their various reaction intermediates as well as the reduction mechanism of the imines. The information disclosed in this work could not only supply a gap of thermodynamics for the chemistry of imines but also strongly promote the fast development of the applications of imines. 2009 American Chemical Society.
Palladium-catalyzed monoamination of dihalogenated benzenes
Larsen, Simon Birks?,Bang-Andersen, Benny,Johansen, Tommy N?rskov,J?rgensen, Morten
, p. 2938 - 2950 (2008/09/19)
The palladium-catalyzed monoamination of symmetric dibromobenzenes can be performed using a catalyst based on Pd2dba3 and BINAP in the presence of NaO(t-Bu). The analogous transformation of non-symmetric bromoiodobenzenes is most effectively performed with Xantphos as the ligand, while reactions with BINAP were non-selective. These transformations can be scaled uneventfully to >10 g quantities. They do not require drybox or Schlenk techniques, and all reagents are weighed out in air. The resulting monobromoanilines are versatile intermediates for further synthetic transformations.
Facile and efficient method for preparation of Schiff bases catalyzed by P2O5/SiO2 under free Solvent conditions
Naeimi, Hossein,Sharghi, Hashem,Salimi, Fariba,Rabiei, Khadijeh
, p. 43 - 47 (2008/03/30)
A simple and convenient method for the preparation of Schiff bases is developed. In this method, the Schiff base compounds were prepared from the reaction of carbonyl compounds with primary amines. In this reaction, P 2O5/SiO2 have catalyzed the Schiff base formation in dry media under solvent-free conditions. Advantages of this method are use of an inexpensive and efficient catalyst, high yields of products, short reaction times, and simplicity of the reaction and workup.
