Liu, Yaxu published the artcileVersatile and Highly Efficient trans-[Pd(NHC)Cl2(DMS/THT)] Precatalysts for C-N and C-C Coupling Reactions in Green Solvents, Synthetic Route of 613-33-2, the publication is European Journal of Organic Chemistry (2022), 2022(14), e202200309, database is CAplus.
A straightforward synthetic procedure to well-defined, air- and moisture- stable trans-[Pd(NHC)Cl2(DMS/THT)] (NHC=IPr, SIPr, IMes, IPrCl, IPr*, IPr#) pre-catalysts was reported. These complexes were obtained by reacting NHC.HCl imidazolium salts with trans-[PdCl2(DMS/THT)2] precursors with the assistance of the weak base K2CO3 in green acetone at40¡ãC. The scalability of this protocol was demonstrated. The catalytic activity of the synthesized complexes was studied in the Buchwald-Hartwig and Suzuki-Miyaura reactions. Remarkably, most of the synthesized complexes exhibited higher catalytic activity with respect to their PEPPSI congeners in the Buchwald-Hartwig amination in 2-MeTHF. In particular, complex trans-[Pd(IPr#)Cl2(DMS)] enabled the coupling of various (hetero)aryl chlorides and primary/secondary amines with a 0.2 mol% catalyst loading. In addition, trans-[Pd(IPr)Cl2(DMS)] showed excellent performance in the room-temperature Suzuki-Miyaura reaction involving various (hetero)aryl chlorides and aryl boronic acids. In summary, the synthesized complexes, especially trans-[Pd(NHC)Cl2(DMS)], was considered as greener alternatives to classical PEPPSI type catalysts based on the lower toxicity of the throw-away DMS ligand compared to 3-chloropyridine.
European Journal of Organic Chemistry published new progress about 613-33-2. 613-33-2 belongs to catalysis-chemistry, auxiliary class Benzene, name is 4,4′-Dimethyldiphenyl, and the molecular formula is C14H14, Synthetic Route of 613-33-2.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia