Photocatalytic Oxidative C–H Thiolation: Synthesis of Benzothiazoles and Sulfenylated Indoles
作者:Andrew N. Dinh、Ashley D. Nguyen、Ernesto Millan Aceves、Samuel T. Albright、Mario R. Cedano、Diane K. Smith、Jeffrey L. Gustafson
DOI:10.1055/s-0039-1690107
日期:2019.9
sulfenylated indoles via an intermolecular reaction. Cyclic voltammetry (CV) and density functional theory studies suggest that benzothiazole formation proceeds via a mechanism that involves an electrophilic sulfur radical, while the indole sulfenylation likely proceeds via a nucleophilic sulfur radical adding into a radical cationic indole. These conditions were successfully extended to several thiobenzamides
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.
Trimethylsilyl Chloride Promoted Selective Desulfurization of Thiocarbonyls to Carbonyls with Hydrogen Peroxide
作者:Kiumars Bahrami、Mohammad Khodaei、Maryam Tajik
DOI:10.1055/s-0030-1258283
日期:2010.12
In the presence of hydrogen peroxide and trimethylsilyl chloride, thiocarbonyls desulfurize to the corresponding carbonyls. The safe, operationally simple, general reaction gives excellent yields in short reaction times with no side reactions and excellent regioselectivity, which makes this process an attractive, environmentally benign alternative for the desulfurization of thiocarbonyls. protecting
Catalyst- and Supporting-Electrolyte-Free Electrosynthesis of Benzothiazoles and Thiazolopyridines in Continuous Flow
作者:Ana A. Folgueiras-Amador、Xiang-Yang Qian、Hai-Chao Xu、Thomas Wirth
DOI:10.1002/chem.201705016
日期:2018.1.9
N‐arylthioamides have been converted to the corresponding benzothiazoles in good to excellent yields and with high current efficiencies. This transformation is achieved using only electricity and laboratory grade solvent, avoiding degassing or the use of inert atmosphere. This work highlights three advantages of electrochemistry in flow, which is (i) a supporting electrolyte‐free reaction, (ii) an easy scale‐up
본 발명은 신규 화합물 및 이를 포함하는 유기 전계 발광 소자에 관한 것으로서, 본 발명에 따른 화합물은 유기 전계 발광 소자의 유기물층, 바람직하게는 발광층, 정공 수송층 전자 수송층 또는 전자 수송 보조층 등에 사용됨에 따라 유기 전계 발광 소자의 발광 효율, 구동 전압, 수명 등을 향상시킬 수 있다.