1216-03-1Relevant academic research and scientific papers
Highly efficient and reusable polystyrene-supported copper(II) catalytic system for S-arylation of potassium thiocyanate by aryl halides in water
Hajipour, Abdol R.,Jajarmi, Saeideh
, p. 566 - 570 (2016)
An inexpensive, efficient and environmentally friendly copper(II) catalyst supported on polystyrene was successfully synthesized and used as a heterogeneous catalyst for S-arylation of potassium thiocyanate by aryl halides. Also this catalyst could be recovered and reused several times without any noticeable decrease in its catalytic activity. Copyright
Method for synthesis of double heterocyclic compound containing sulfur and nitrogen
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Paragraph 0024, (2019/11/12)
The invention discloses a method forsynthesis of a double heterocyclic compound containing sulfur and nitrogen, and belongs to the technical field of organic chemistry. An indolecompound1, an o-bromobenzaldehydecompound2 andelemental sulfur are used as ra
Diarylation of chalcogen elements using arylboronic acids via copper- or palladium-catalyzed oxidative coupling
Taniguchi, Nobukazu
, p. 5818 - 5823 (2016/08/30)
Transition metal-catalyzed diarylations of sulfur, selenium and tellurium were achieved using arylboronic acids in air. A copper-catalyzed reaction of sulfur or selenium efficiently yielded numerous symmetrical diaryl sulfides or selenides in the presence of NH4BF4. However, the diarylation of tellurium was not possible using this method, and required a palladium catalyst in the presence of KI and air for the reaction to proceed.
Synthesis of diaryl thioethers from aryl halides and potassium thiocyanate
Hajipour, Abdol R.,Pourkaveh, Raheleh,Karimi, Hirbod
, p. 879 - 883 (2015/02/05)
An efficient palladium catalyst was synthesized using nicotine, benzyl chloride and palladium chloride. The structure of this catalyst was characterized and it was then used for the synthesis of diaryl sufides. A variety of diaryl thioethers were synthesized under relatively mild reaction conditions. This protocol avoids foul-smelling thiols via cross-coupling of aryl halides with potassium thiocyanate and all substrates give the corresponding products in good to excellent yields in the presence of low amounts of the catalyst.
Efficient copper-catalyzed double S-arylation of aryl halides with sodium sulfide in PEG-400
Chen, Junmin,Zhang, Yimin,Liu, Li,Yuan, Tangjun,Yi, Fei
, p. 1284 - 1290 (2012/11/07)
An efficient copper-catalyzed double S-arylation of sodium sulfide with aryl halides in PEG-400 has been developed. With CuI as a catalyst and PEG-400 as a solvent, a range of electron-withdrawing or electron-donating aryl iodides and aryl bromides were found to be applicable to the environmentally benign system. The present procedure is mild and tolerant of a variety of functional groups and the steric hindrance of ortho-substituents on aryl halides did not affect the outcome of good to excellent yields. Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements to view the free supplemental file.
Optimization of the central linker of dicationic bis-benzimidazole anti-MRSA and anti-VRE agents
Hu, Laixing,Kully, Maureen L.,Boykin, David W.,Abood, Norman
scheme or table, p. 3374 - 3377 (2010/02/28)
A series of bis-benzimidazole diamidine compounds containing different central linkers has been synthesized and evaluated for in vitro antibacterial activities, including drug-resistant bacterial strains. Seven compounds have shown potent antibacterial activities. The anti-MRSA and anti-VRE activities of compound 1h were more potent than that of the lead compound 1a and vancomycin.
Bisoxadiazolidine derivative
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, (2008/06/13)
A bisoxadiazolidine dione derivative represented by the following general formula (I) or a pharmaceutically acceptable salt thereof, which is useful as an insulin sensitivity-increasing drug, and a pharmaceutical composition thereof. STR1 each represents a phenylene group L: (1) an oxygen, (2) a STR2 (3) a --S(O)n --, (4) a --CO--, (5) a STR3 (6) an alkylene group or an alkenylene group which may respectively be interrupted with an oxygen atom and/or a sulfur atom.
