Microwave-Assisted Simple and Efficient Ligand Free Copper Nanoparticle Catalyzed Aryl-Sulfur Bond Formation
作者:Brindaban C. Ranu、Amit Saha、Ranjan Jana
DOI:10.1002/adsc.200700289
日期:2007.12.10
A new protocol for the coupling of aryl iodides with thiophenols and alkanethiols catalyzed by coppernanoparticles under ligand-free condition has been developed. A variety of functionalized aryl sulfides are prepared in excellent yields under microwave irradiation for 5–7 min. A plausible radical mechanism has been suggested.
Recyclable Heterogeneous Supported Copper-Catalyzed Coupling of Thiols with Aryl Halides: Base-Controlled Differential Arylthiolation of Bromoiodobenzenes
作者:Sukalyan Bhadra、Bojja Sreedhar、Brindaban C. Ranu
DOI:10.1002/adsc.200900358
日期:2009.10
Alumina-supported copper sulfate efficiently catalyzes the S-arylation of aromatic, heteroaromatic and aliphatic thiols with aryl as well as heteroaryl halides underaerobic, ligand-freeconditions. This protocol provides an easy access to a variety of thioethers as well as unsymmetrical bis-thioethers by base-controlled differential coupling of thiols with iodo- and bromo-substituents in an aromatic
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.
Coenzyme NAD+ models can be applied in the photooxygenation of sulfides to sulfoxides as organocatalysts at room temperature. A series of sulfoxides are synthesized easily with this protocol and the possible mechanism is discussed. This procedure provides a reliable approach to the clean production of useful sulfoxides in synthetic chemistry.
Phenyldithiocarbamates: Efficient Sulfuration Reagents in the Chan-Lam Coupling Reaction
作者:Yu Cheng、Xing Liu、Zhi-Bing Dong
DOI:10.1002/ejoc.201701631
日期:2018.2.14
A Chan–Lam type couplingreaction for the synthesis of diaryl sulfides is reported. With Cu(OAc)2 as catalyst, phenylboronic acids reacted with phenyldithiocarbamates in N,N‐dimethylformamide (DMF) at 110 °C smoothly to give the corresponding diaryl sulfides in good yields.