2615-11-4Relevant academic research and scientific papers
The role of ancillary ligand on regulating photoluminescence properties of Eu(III) helicates
Gao, Ting,Li, Hongfeng,Ma, Hongjian,Yan, Pengfei,Zhou, Yanyan
, (2021)
Three binuclear Eu3+ helicates, [Eu2(OBTA)3(H2O)3(CH3COCH3)]·1.5CH3COCH3·H2O (1), [Eu2(OBTA)3(Bpy)2]·2CH3/
Investigations into the structure-activity relationship in gemini QACs based on biphenyl and oxydiphenyl linker
Vereshchagin, Anatoly N.,Frolov, Nikita A.,Konyuhova, Valeria Yu,Kapelistaya, Ekaterina A.,Hansford, Karl A.,Egorov, Mikhail P.
, p. 3429 - 3438 (2021/02/03)
Eighteen novel gemini quaternary ammonium compounds were synthesized to examine the effect of linker nature, aliphatic chain length and their relative position on antibacterial and antifungal activity. The synthesized compounds showed strong bacteriostatic activity against a panel of both Gram-positive and Gram-negative bacteria, including methicillin-resistant Staphylococcus aureus (MRSA) and two fungi. Some of these compounds exhibited a wider and more potent antimicrobial spectrum than commonly-used antiseptics, such as benzalkonium chloride (BAC), cetylpyridinium chloride (CPC), chlorhexidine digluconate (CHG) and octenidine dihydrochloride (OCT).
Diaryl Ether Formation Merging Photoredox and Nickel Catalysis
Liu, Le,Nevado, Cristina
supporting information, p. 2188 - 2193 (2021/05/04)
Photoredox and Ni catalysis are combined to produce diaryl ethers under mild conditions. A broad range of aryl halides and phenol derivatives are cross-coupled in the presence of a readily available organic photocatalyst and NiBr2(dtbpy). Symmetrical diaryl ethers have also been directly obtained from aryl bromides in the presence of water. Mechanistic investigations support the involvement of Ni(0) species at the outset of the reaction and a Ni(II)/Ni(III)-photocatalyzed single electron transfer process preceding the productive C(sp2)-OAr reductive elimination.
Nickel-Catalyzed Etherification of Phenols and Aryl Halides through Visible-Light-Induced Energy Transfer
Zhu, Da-Liang,Jiang, Shan,Wu, Qi,Wang, Hao,Li, Hai-Yan,Li, Hong-Xi
supporting information, p. 8327 - 8332 (2021/10/25)
Notwithstanding some progress in nickel-catalyzed etherification of alkanols and arylhalides, the ability of such a Ni-catalyzed transformation employing phenols to diaryl ethers is unsuccessful due to phenolates with much lower reduction potentials, which suppress the oxidation of nickel(II) intermediates into requisite Ni(III) species. We herein report visible-light-initiated, nickel-catalyzed O-arylation of phenols with arylhalides using t-BuNH(i-Pr) as the base and thioxanthen-9-one as the photosensitizer under visible light. This photocoupling exhibits a broad substrate scope.
Selective electrochemical oxidation of aromatic hydrocarbons and preparation of mono/multi-carbonyl compounds
Li, Zhibin,Zhang, Yan,Li, Kuiliang,Zhou, Zhenghong,Zha, Zhenggen,Wang, Zhiyong
, p. 2134 - 2141 (2021/09/29)
A selective electrochemical oxidation was developed under mild condition. Various mono-carbonyl and multi-carbonyl compounds can be prepared from different aromatic hydrocarbons with moderate to excellent yield and selectivity by virtue of this electrochemical oxidation. The produced carbonyl compounds can be further transformed into α-ketoamides, homoallylic alcohols and oximes in a one-pot reaction. In particular, a series of α-ketoamides were prepared in a one-pot continuous electrolysis. Mechanistic studies showed that 2,2,2-trifluoroethan-1-ol (TFE) can interact with catalyst species and generate the corresponding hydrogen-bonding complex to enhance the electrochemical oxidation performance. [Figure not available: see fulltext.]
Selective one-pot access to symmetrical or unsymmetrical diaryl ethers by copper-catalyzed double arylation of a simple oxygen source
Tlili, Anis,Monnier, Florian,Taillefer, Marc
supporting information; experimental part, p. 12299 - 12302 (2011/02/16)
Great CO-mbination: A novel method is reported for the controlled one-pot synthesis of various symmetrical or unsymmetrical diaryl ethers by double arylation of a simple inorganic oxygen source (see scheme). This versatile and highly selective process is based on the use of a cheap and low toxicity copper catalytic system.
Novel bis- and tris-1,2,4-trioxanes: Synthesis and antimalarial activity against multidrug-resistant Plasmodium yoelii in swiss mice
Singh, Chandan,Verma, Ved Prakash,Naikade, Niraj Krishna,Singh, Ajit Shankar,Hassam, Mohammad,Puri, Sunil K.
experimental part, p. 7581 - 7592 (2009/11/30)
A new series of bis-1,2,4-trioxanes 12a-h, 13a-h, and 14a-h and tris-1,2,4-trioxanes 12i-14i were prepared and evaluated against multidrug-resistant Plasmodium yoelii in Swiss mice by oral route. Cyclopentane-based bis-trioxanes 12a, 12b, 12f-h and cycloh
NOVEL SUBSTITUTED BIS-1, 2, 4-TRIOXANES AND A PROCESS FOR PREPARATION THEREOF
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Page/Page column 10-11, (2008/12/08)
The present invention relates to novel substituted bis-1, 2, 4-trioxanes i.e. compounds containing two 1, 2, 4-trioxane moieties of general formula (6) useful as antimalarial agents. This invention also relates to a process for the preparation of novel su
Synthesis, Structure, Composition, and Properties of Rolivsans
Zaitsev,Khramova,Tsygankova
, p. 634 - 638 (2007/10/03)
Novel thermosetting resins Rolivsans were prepared, and their structure, composition, and properties were studied. The structural parameters of Rolivsans as influenced by the synthesis conditions were determined.
Synthesis of symmetrical diaryl ethers from arylboronic acids mediated by copper(II) acetate
Sagar,Tale,Adude
, p. 7061 - 7063 (2007/10/03)
Copper promoted generation of phenols in situ through arylation of water and their subsequent arylation with arylboronic acids affords a wide range of symmetrical diaryl ethers in good to high yield. The reaction is rapid, mild, convenient and tolerant of a wide range of functionalities on the arylboronic acid.
