869854-44-4Relevant academic research and scientific papers
Achieving Nickel Catalyzed C-S Cross-Coupling under Mild Conditions Using Metal-Ligand Cooperativity
Sikari, Rina,Sinha, Suman,Das, Siuli,Saha, Anannya,Chakraborty, Gargi,Mondal, Rakesh,Paul, Nanda D.
, p. 4072 - 4085 (2019/04/01)
A simple and efficient approach of C-S cross-coupling of a wide variety of (hetero)aryl thiols and (hetero)aryl halides under mild conditions, mostly at room temperature, catalyzed by well-defined singlet diradical Ni(II) catalysts bearing redox noninnocent ligands is reported. Taking advantage of ligand centered redox events, the high-energetic Ni(0)/Ni(II) or Ni(I)/Ni(III) redox steps were avoided in the catalytic cycle. The cooperative participation of both nickel and the coordinated ligands during oxidative addition/reductive elimination steps allowed us to perform the catalytic reactions under mild conditions.
PHOTOCATALYST-FREE, LIGHT-INDUCED CARBON-SULFUR CROSS-COUPLING METHODS
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Paragraph 0101; 0204; 0205, (2019/01/10)
In one aspect, the invention provides a method of promoting a carbon-sulfur bond forming reaction. In certain embodiments, the reaction comprises cross-coupling of a(n) (hetero)aryl halide with a thiol to form the carbon-sulfur bond, wherein the method is promoted by light irradiation in the absence of a photocatalyst. In other embodiments, the cross-coupling reaction can be promoted through visible light irradiation, including sunlight.
Visible-light-promoted C-S cross-coupling via intermolecular charge transfer
Liu, Bin,Lim, Chern-Hooi,Miyake, Garret M.
supporting information, p. 13616 - 13619 (2017/11/06)
Disclosed is a mild, scalable, visible-lightpromoted cross-coupling reaction between thiols and aryl halides for the construction of C-S bonds in the absence of both transition metal and photoredox catalysts. The scope of aryl halides and thiol partners includes over 60 examples and therefore provides an entry point into various aryl thioether building blocks of pharmaceutical interest. Furthermore, to demonstrate its utility, this C-S coupling protocol was applied in drug synthesis and latestage modifications of active pharmaceutical ingredients. UV-vis spectroscopy and time-dependent density functional theory calculations suggest that visible-lightpromoted intermolecular charge transfer within the thiolate-aryl halide electron donor-acceptor complex permits the reactivity in the absence of catalyst.
The synthesis and SAR of novel diarylsulfone 11β-HSD1 inhibitors
Yan, Xuelei,Wang, Zhulun,Sudom, Athena,Cardozo, Mario,Degraffenreid, Michael,Di, Yongmei,Fan, Pingchen,He, Xiao,Jaen, Juan C.,Labelle, Marc,Liu, Jinsong,Ma, Ji,McMinn, Dustin,Miao, Shichang,Sun, Daqing,Tang, Liang,Tu, Hua,Ursu, Stefania,Walker, Nigel,Ye, Qiuping,Powers, Jay P.
scheme or table, p. 7071 - 7075 (2011/01/03)
In this communication, human 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1) inhibitory activities of a novel series of diarylsulfones are described. Optimization of this series resulted in several highly potent 11β-HSD1 inhibitors with excellent pharmacokinetic (PK) properties. Compound (S)-25 showed excellent efficacy in a non-human primate ex vivo pharmacodynamic model.
ARYL SULFONES AND USES RELATED THERETO
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Page/Page column 69, (2010/02/14)
Aryl sulfone compounds of formula (I) and (II) are described and have therapeutic utility, particularly in the treatment of diabetes, obesity and related conditions and disorders.
