Transition‐Metal‐Free Cross‐Coupling of Benzothiophenes and Styrenes in a Stereoselective Synthesis of Substituted (
<i>E,Z</i>
)‐1,3‐Dienes
作者:Mindaugas Šiaučiulis、Nanna Ahlsten、Alexander P. Pulis、David J. Procter
DOI:10.1002/anie.201902903
日期:2019.6.24
transition metal‐free one‐pot stereoselective approach to substituted (E,Z)‐1,3‐dienes was developed by using an interrupted Pummerer reaction/ligand‐coupling strategy. Readily available benzothiophene S‐oxides, which can be conveniently prepared by oxidation of the parent benzothiophenes, undergo Pummerer coupling with styrenes. Reaction of the resultant sulfonium salts with alkyllithium/magnesium reagents
본 발명은 신규한 유기 전계 발광 화합물 및 이를 이용한 유기 전계 발광 소자에 관한 것으로, 보다 상세하게는 정공 주입능, 전자 주입능, 발광능이 우수한 신규 화합물 및 이를 하나 이상의 유기물층에 포함함으로써, 높은 발광효율, 낮은 구동전압 등의 특성이 향상된 유기 전계 발광 소자에 관한 것이다.
An operationally simple and practical method for the reduction of sulfoxides into sulfides using tetrahydroxydiboron [B2(OH)4] as a deoxygenative agent in the absence of catalyst and additive is described. A wide range of diaryl-, dialkyl- and aryl/alkyl-sulfoxides was successfully converted into corresponding sulfides in 92–99% yields. The applicability and practicability were demonstrated by 36 examples