37909-88-9Relevant academic research and scientific papers
Immobilization of palladium nanoparticles on Metformin-functionalized graphene oxide as a heterogeneous and recyclable nanocatalyst for Suzuki coupling reactions and reduction of 4-nitrophenol
Hemmati, Saba,Mehrazin, Lida,Pirhayati, Mozhgan,Veisi, Hojat
, p. 414 - 422 (2019)
In this study, Pd nanoparticles supported on Metformin modified graphene oxide (GO-Met-Pd) is proposed as a green heterogeneous catalyst. The structural properties of the as-synthesized nanocatalyst were determined by X-ray diffraction (XRD), Fourier transformed infrared (FT-IR) spectroscopy, transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDS), wavelength-dispersive X-ray spectroscopy (WDX) and inductively coupled plasma (ICP). Activity of the catalyst was investigated by focusing on the Suzuki-Miyaura coupling reaction and room-temperature reduction of 4-nitrophenol (4-NP), as model reactions. The catalyzed reactions provided high yields of biphenyl compounds through the Suzuki-Miyaura reaction and outlined highly efficient conversion of 4-NP to its reduced form. Moreover, no significant Pd leaching was detected in the reaction solutions and the catalyst could be recovered, at least, 6 times without any considerable loss of its catalytic activity.
Pd nanoparticles deposited on Isoniazid grafted multi walled carbon nanotubes: Synthesis, characterization and application for Suzuki reaction in aqueous media
Hajighorbani, Mahsa,Hekmati, Malak
, p. 88916 - 88924 (2016)
In this article a new heterogeneous nanocatalyst based on palladium supported on Isoniazide-functionalized multi-walled carbon nanotubes (MWCNTs) has been introduced. The synthetic process of preparation of the mentioned nanocatalyst (Isoniazide-MWCNTs/Pd
Photochemical (Hetero-)Arylation of Aryl Sulfonium Salts
Zhao, Yue,Yu, Congjun,Liang, Wenjing,Patureau, Frederic W.
, p. 6232 - 6236 (2021/08/23)
The construction of (hetero)biaryls, which are ubiquitous scaffolds among medical substances, functional materials, and agrochemicals, constitutes a key application of cross-coupling methods. However, these usually require multiple synthetic steps. Herein, we report a simple photoinduced and catalyst-free C-H/C-H (hetero)arylation cross-coupling through aryl thianthrenium salts, which are formed site-selectively by direct C-H functionalization. The key to this approach is the UV-light, which can disrupt the C-S bond to form thianthrene radical cations and aryl radicals.
Base-Controlled One-Pot Chemoselective Suzuki-Miyaura Reactions for the Synthesis of Unsymmetrical Terphenyls
Feng, Fangfang,Hu, Qinghong,Li, Xinmin,Ren, Changyue,Teng, Yong,Yuan, Zeli
supporting information, p. 2131 - 2135 (2019/11/25)
We report a chemoselective Suzuki-Miyaura reaction protocol of using bromophenyl fluorosulfonate as building block for the preparation of unsymmetrical terphenyls. The chemoselective cross-coupling of bromophenyl fluorosulfonate and arylboronic acids can be achieved by controlling base species without using any ligands. Under this methodology, various of m - and p -unsymmetrical terphenyls were obtained in moderate to good yields.
Furan- and thiophene-2-carbonyl amino acid derivatives activate hypoxia-inducible factor via inhibition of factor inhibiting hypoxia-inducible factor-1
Kawaguchi, Shin-ichi,Gonda, Yuhei,Yamamoto, Takuya,Sato, Yuki,Shinohara, Hiroyuki,Kobiki, Yohsuke,Ichimura, Atsuhiko,Dan, Takashi,Sonoda, Motohiro,Miyata, Toshio,Ogawa, Akiya,Tsujita, Tadayuki
, (2018/04/17)
Induction of a series of anti-hypoxic proteins protects cells during exposure to hypoxic conditions. Hypoxia-inducible factor-α (HIF-α) is a major transcription factor that orchestrates this protective effect. To activate HIF exogenously, without exposing
N-Doped porous carbon nanotubes: Synthesis and application in catalysis
Yang, Zhenzhen,Liu, Zhenghui,Zhang, Hongye,Yu, Bo,Zhao, Yanfei,Wang, Huan,Ji, Guipeng,Chen, Yu,Liu, Xinwei,Liu, Zhimin
supporting information, p. 929 - 932 (2017/01/17)
Uniform N-doped carbon nanotubes were obtained for the first time via a morphology-preserving thermal transformation of organic polymer nanotubes without any additional templates. These carbon nanotubes acted as a superior metal-free carbon catalyst for C-H arylation of benzene, reductive hydrogen atom transfer and oxidation reactions.
Biarylalkyl Carboxylic Acid Derivatives as Novel Antischistosomal Agents
M?der, Patrick,Blohm, Ariane S.,Quack, Thomas,Lange-Grünweller, Kerstin,Grünweller, Arnold,Hartmann, Roland K.,Grevelding, Christoph G.,Schlitzer, Martin
supporting information, p. 1459 - 1468 (2016/07/16)
Parasitic platyhelminths are responsible for serious infectious diseases, such as schistosomiasis, which affect humans as well as animals across vast regions of the world. The drug arsenal available for the treatment of these diseases is limited; for example, praziquantel is the only drug currently used to treat ≥240 million people each year infected with Schistosoma spp., and there is justified concern about the emergence of drug resistance. In this study, we screened biarylalkyl carboxylic acid derivatives for their antischistosomal activity against S. mansoni. These compounds showed significant influence on egg production, pairing stability, and vitality. Tegumental lesions or gut dilatation was also observed. Substitution of the terminal phenyl residue in the biaryl scaffold with a 3-hydroxy moiety and derivatization of the terminal carboxylic acid scaffold with carboxamides yielded compounds that displayed significant antischistosomal activity at concentrations as low as 10 μm with satisfying cytotoxicity values. The present study provides detailed insight into the structure–activity relationships of biarylalkyl carboxylic acid derivatives and thereby paves the way for a new drug-hit moiety for fighting schistosomiasis.
Nickel-catalyzed one-pot synthesis of biaryls from phenols and arylboronic acids via C-O activation using TCT reagent
Iranpoor, Nasser,Panahi, Farhad,Jamedi, Fereshteh
, p. 6 - 10 (2015/03/05)
In this study, the direct Nickel-catalyzed Suzuki-Miyaura coupling reaction of phenols and arylboronic acids via C-O bond activation using 2,4,6-trichloro-1,3,5-triazine (TCT) is described. Initially, phenols were reacted with TCT to give the corresponding 2,4,6-triaryloxy-1,3,5-triazine (TAT) products. Subsequently, arylboronic acid, base and Ni-catalyst were added to the generated aryl C-O electrophile to obtain the final biaryl product. This study represents a simple and direct method for the synthesis of biaryls from phenolic compounds using sub-stoichiometric amounts of TCT as a cheap and readily available C-O activating reagent.
Trisulfur radical anion as the key intermediate for the synthesis of thiophene via the interaction between elemental sulfur and NaO t Bu
Zhang, Guoting,Yi, Hong,Chen, Hong,Bian, Changliang,Liu, Chao,Lei, Aiwen
, p. 6156 - 6159 (2015/01/16)
A facile base-promoted sulfur-centered radical generation mode and a single-step protocol for the synthesis of thiophene derivatives using 1,3-diynes via the interaction between elemental sulfur and NaOtBu has been reported. EPR experiments revealed that the trisulfur radical anion acts as a key intermediate of this process. A plausible mechanism has been proposed.
One-pot synthesis of functionalized p-terphenyl derivatives
Chang, Meng-Yang,Chan, Chieh-Kai,Wu, Ming-Hao
, p. 7916 - 7924 (2013/08/23)
A one-pot synthetic route for preparing functionalized p-terphenyl derivatives 1 and 4 is developed. The route is easily carried from the treatment of cinnamyl aldehydes 2 with substituted allylsulfones 3 in good yields via the tandem intermolecular aldol condensation/intramolecular electrocyclization/ oxidative dehydrogenation.
