- Novel ferrocene-based 1,2,3-triazolyl compounds: Synthesis, anti-migration properties and catalytic effects on oxidizers during combustion
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To tackle high-migratory and high-volatility problem of marketed neutral ferrocene-based burning rate catalysts, twenty-one ferrocene-based 1,2,3-triazolyl compounds (Fc-TAZs) were synthesized by click reaction and characterized completely by NMR, FT-IR,
- Cheng, Wenqian,Shi, Xiaoling,Zhang, Yu,Jian, Yajun,Zhang, Guofang
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- Benzoate-based burning rate catalyst containing dinuclear ferrocene group and preparation method of benzoate-based burning rate catalyst
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The invention discloses a benzoate-based burning rate catalyst containing a dinuclear ferrocene group and a preparation method of the benzoate-based burning rate catalyst. A structural formula of theburning rate catalyst is as shown in the specification.
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Paragraph 0017-0020
(2019/04/02)
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- Synthesis and antibacterial activity of some novel piperazinophanes with an intraannular ester functionality
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1:1 and 2:2 oligomeric piperazinophanes with an intraannular ester functionality have been synthesized via Mannich reaction of various aromatic esters with piperazine by a one-pot reaction under benign conditions through the multicomponent reaction methodology. The newly synthesized piperazinophanes were characterized using spectral and analytical methods. The ester based 1:1 oligomeric piperazinophanes exhibit good target binding ability in molecular docking studies and also show better antibacterial activity against Escherichia coli, Klebsiella pneumoniae, Staphylococcus aureus and Streptococcus pyogenes bacteria than the 2:2 oligomeric piperazinophanes.
- Selvarani, Sivasamy,Rajakumar, Perumal
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p. 9494 - 9499
(2016/11/11)
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- Synthesis of bis(propargyl) aromatic esters and ethers: A potential replacement for isocyanate based curators
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This study reports the synthesis and characterization of a novel class of non-isocyanate curing agents based on bis-propargyl aromatic esters 2a-e and ethers 4a-c. A total of eight non-isocyanate curators were prepared from the reaction of respective dicarboxy or dihydroxybenzene with propargyl bromide in the presence of potassium carbonate with good yields. The structure and purity of the synthesized compounds and the corresponding intermediates were confirmed by spectral (IR and NMR), thermal (DSC) and chromatographic techniques (HPLC & GC-MS). Furthermore, kinetics of the curing reaction between glycidyl azide polymer (GAP) and the synthesized alkynes (4b, 4c) were studied using time-resolved FT-IR spectroscopy as a function of time at 303, 323 and 333 K. It was found that the curing reaction was faster when the temperature was increased. Kinetic parameters of the curing reaction, such as the reaction order and activation energy, were calculated for the GAP-4a and GAP-4c systems. All the curing reactions followed first order kinetics and the corresponding activation energy of the curing reaction for the systems was found to be 15.56 and 13.22 kcal mol-1. For comparison, curing studies were performed for GAP with a conventional curator Desmodur N-100. GAP cured with non-isocyanate curators offered good mechanical properties compared to GAP cured with isocyanate (N-100). The advantage of these new curing systems is that they do not require catalyst and there is no need for specific environmental conditions. Based on these studies, 1,4-bis(2-propynyloxy)benzene (4b) has the most potential as a non-isocyanate curator for azide polymeric binders.
- Sonawane, Sanjeevani H.,Anniyappan,Athar, Javaid,Banerjee, Shaibal,Sikder, Arun K.
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p. 8495 - 8502
(2016/02/05)
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- The first thiol-yne click chemistry approach for the preparation of liquid crystalline elastomers
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A thiol-yne click chemistry reaction is presented, for the first time, to prepare liquid crystalline elastomers. The synthetic strategy is based on two liquid crystalline monomers, one bearing an alkyne group and the second bearing two thiol groups, to cr
- Martella, Daniele,Parmeggiani, Camilla,Wiersma, Diederik Sybolt,Piol, Milagros,Oriol, Luis
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p. 9003 - 9010
(2015/09/01)
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- Regioselective synthesis and antimicrobial studies of ester linked 1,4-disubstituted 1,2,3-bistriazoles
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A series of 1,4-disubstituted 1,2,3-bistriazoles was synthesized via click chemistry by cycloaddition of various bisalkynes with benzyl/2-phenylethyl azide. Synthesized triazoles were characterized by IR, 1H NMR, 13C NMR and mass spe
- Lal, Kashmiri,Kumar, Ashwani,Pavan,Kaushik
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body text
p. 4353 - 4357
(2012/07/28)
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- REACTION OF DIACETYLENIC COMPOUNDS WITH BENZYL AZIDE. III. CYCLOADDITION OF BENZYL AZIDE TO TERMINAL SEPARATED DIYNES
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The addition of benzyl azide to terminal diacetylenic compounds containing both electron-donating and electron-withdrawing substituents was investigated.In all cases a mixture of the regioisomers of bis-1,2,3-triazoles was obtained.It was established that
- Vereschagin, L. I.,Bol'shedovorskaya, R. L.,Maksikova, A. V.,Serebryakova, E. S.,Kozyrev, S. V.,et al.
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p. 2030 - 2033
(2007/10/02)
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- Alkynyl esters for controlling mites
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Esters of alkynyl alcohols or alkynyl acids are useful for the control of mites.
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