制备 d'un epithio dithia [3.3] metacyclophane (I), de son 类似物 acyclique le bis-methylthiomethyl-1,3 phenylthio-2benzo et de leurs monosulfoxydes。Dans la reaction de (I) ou de ses monosulfoxydes avec l'acide silvercentre, on observe la形成d'une liaison transannulaire
Potassium Isopropoxide: For Sulfination It is the Only Base You Need!
作者:Mahmoud Sayah、Michael G. Organ
DOI:10.1002/chem.201303756
日期:2013.11.25
PEPPSI max: KOiPr has been identified as the key ingredient for Pd‐catalyzed sulfination (see scheme). Potassium is essential to keep the thiol concentration low, and isopropoxide is necessary for precatalyst activation and to break up Pd‐sufide‐based resting states. Together with the reactive Pd‐PEPPSI‐IPentCl o‐picoline catalyst, this system couples profoundly deactivated partners at RT that other
PEPPSI max:KO i Pr被确定为Pd催化硫化的关键成分(参见方案)。钾对于保持较低的硫醇浓度至关重要,而异丙醇对于激活前催化剂和破坏基于硫化钯的静止状态则必不可少。一起与反应性的Pd-PEPPSI-IPent氯 ø甲基吡啶催化剂,该系统耦合深刻在RT失活的合作伙伴,其它催化剂可以在回流的甲苯中未完成。
Carbon–Sulfur Bond Formation Catalyzed by [Pd(IPr*<sup>OMe</sup>)(cin)Cl] (cin = cinnamyl)
作者:Gulluzar Bastug、Steven P. Nolan
DOI:10.1021/jo401492n
日期:2013.9.20
The newly prepared complex [Pd(IPr*OMe)(cin)(Cl)] provides high catalytic activity for carbon–sulfur cross-coupling reactions. Nonactivated and deactivated aryl halides were successfully coupled with a large variety of aryl- and alkylthiols using this well-defined palladium N-heterocycliccarbene (NHC) complex.
Deoxygenation of sulphoxides to sulphides with trichlorophosphane
作者:Xia Zhao、Xiancai Zheng、Bo Yang、Jianqiao Sheng、Kui Lu
DOI:10.1039/c7ob02834b
日期:——
An efficient route to deoxygenation of sulphoxides to sulphides with PCl3 under mild reaction condition was developed. PCl3 was used as a reducing agent for the first time to convert sulphoxides to sulphides. The mild conditions, use of cheap and readily available reagent, and broad substrate scope render it a useful strategy for preparing sulphides.
Carbon-Sulfur Bond Formation of Challenging Substrates at Low Temperature by Using Pd-PEPPSI-IPent
作者:Mahmoud Sayah、Michael G. Organ
DOI:10.1002/chem.201102158
日期:2011.10.10
bromides and chlorides has been achieved under the most mild temperatures yet reported (i.e., room temperature to 40 °C). The bulk afforded by the di‐2,6‐(3‐propylphenyl)imidazolium‐derived Pd‐PEPPSI‐IPent catalyst is believed to actively promote the critical reductive elimination step of the catalytic cycle, thereby eliminating the formation of poisonous off‐cycle dimeric resting states that have plagued