TiCl<sub>4</sub>-promoted desulfurization of thiocarbonyls and oxidation of sulfides in the presence of H<sub>2</sub>O<sub>2</sub>
作者:Kiumars Bahrami、Mohammad M. Khodaei、Vida Shakibaian、Donya Khaledian、Behrooz H. Yousefi
DOI:10.1080/17415993.2011.647915
日期:2012.4.1
TiCl4 proved to be a highly reactive reagent system for the desulfurization of thioamide and thioketone derivatives in excellent yields and short reaction times with high purity. Sulfides were also found to undergo oxidation to sulfones under similar reaction conditions. In most cases, these reactions are highly selective, simple, and clean, affording products in high yields and purity.
AROMATIC SULFONE COMPOUND AS ALDOSTERONE RECEPTOR MODULATOR
申请人:Dainippon Sumitomo Pharma Co., Ltd.
公开号:EP1844768A1
公开(公告)日:2007-10-17
The present invention provides a compound represented by the following formula (I):
[wherein, A represents a group of the following formula (A-1):
etc., R1 and R2 each independently represent a hydrogen atom etc., Z represents CR3 etc., W represents CR4 etc., Q represents CR5 etc., R3, R4 and R5 each independently represent a hydrogen atom etc., Y represents an oxygen atom or sulfur atom, X represents an oxygen atom etc. and B represents an optionally substituted aryl group or optionally substituted heteroaryl group], the prodrug thereof or the pharmaceutically acceptable salt thereof for preventing or treating various diseases such as hypertesion, cerebral stroke, cardiac failure, etc.
作者:Martyn R. Ashcroft、Peter Bougeard、Adrian Bury、Christopher J. Cooksey、Michael D. Johnson
DOI:10.1016/0022-328x(85)87417-9
日期:1985.7
homolysis of the substrate, abstracts iodine from the toluenesulphonyl iodide to give the toluenesulphonyl radical, which attacks the organic ligand of the cobaloxime, preferably at the terminal olefinic carbon, thereby displacing cobaloxime(II) and giving the observed organic product.
Palladium Catalyzed Monoselective α-Arylation of Sulfones and Sulfonamides with 2,2,6,6-Tetramethylpiperidine·ZnCl·LiCl Base and Aryl Bromides
作者:Thomas Knauber、Joseph Tucker
DOI:10.1021/acs.joc.6b01062
日期:2016.7.1
Negishi-type α-arylation of sulfones and sulfonamides with a broad range of aryl bromides has been developed. The substrates are selectively metalated in situ with tmp·ZnCl·LiCl base (tmp: 2,2,6,6-tetramethylpiperidine) and cross-coupled in the presence of a catalyst system that is generated from Pd(dba)2 and XPhos. Electron-deficient, electron-rich, and heterocyclic aryl bromides have been successfully
Application of the polyacrylonitrile fiber as a support for the green heterogeneous base catalyst and supported phase-transfer catalyst
作者:Xian-Lei Shi、Minli Tao、Huikun Lin、Wenqin Zhang
DOI:10.1039/c4ra12069h
日期:——
Highly efficient and recyclable polyethylene polyamine functionalized polyacrylonitrile fiber as the heterogeneous base catalyst and supported phase-transfer catalyst.