210162-62-2Relevant articles and documents
Palladium on carbon-catalyzed one-pot N-arylindole synthesis: Intramolecular aromatic amination, aromatization, and intermolecular aromatic amination
Monguchi, Yasunari,Marumoto, Takahisa,Takamatsu, Haruki,Sawama, Yoshinari,Sajiki, Hironao
, p. 1866 - 1872 (2014)
Indole and indoline derivatives were selectively and temperature dependently synthesized via the intramolecular cross-coupling reaction between the amino and aromatic bromine functionalities of 2-bromophenethylamine derivatives in the presence of 10% palladium on carbon (Pd/C), 1,1-bis(diphenylphosphino)ferrocene (DPPF), and sodium tert-butoxide (NaO-t-Bu) in mesitylene at 140 and 200°C, respectively. The neutralization using acetic acid after formation of the indoline derivatives effectively promoted their aromatization, and the corresponding indole derivatives were obtained at 140°C. Furthermore, various aryl groups were also introduced to the N-1 position of the indole, pyrrole, and carbazole rings by their direct intramolecular arylation with aryl halides and a one-pot protocol for N-arylindole synthesis from 2-bromophenethylamine was developed.
A Pd/Cu-Free magnetic cobalt catalyst for C-N cross coupling reactions: synthesis of abemaciclib and fedratinib
Hajipour, Abdol R.,Khorsandi, Zahra,Sarfjoo, Mohamad Reza,Varma, Rajender S.
supporting information, p. 5222 - 5229 (2021/07/29)
Herein, the synthesis of a nano-catalytic system comprising magnetic nanoparticles as the core and edible natural ligands bearing functional groups as supports for cobalt species is described. Subsequent to its characterization, the efficiency of the catalyst was investigated for C-N cross-coupling reactions using assorted derivatives of amines and aryl halides. This novel and easily accessible Pd- and Cu-free catalyst exhibited good catalytic activity in these reactions using γ-valerolactone (GVL) at room temperature; good recyclability bodes well for the future application of this strategy. The introduced catalytic system is attractive in view of the excellent efficiency in an array of coupling reactions and its versatility is illustrated in the synthesis of abemaciclib and fedratinib, which are FDA-approved new and significant anti-cancer medicinal compounds that are prepared under green reaction conditions.
Palladium-catalyzed c(sp2)-n bond cross-coupling with triaryl phosphates
Chen, Zicong,Chen, Xiangmeng,So, Chau Ming
, (2019/05/22)
The first general palladium-catalyzed amination of aryl phosphates is described. The combination of MorDalPhos with [Pd(-cinnamyl)Cl]2 enables the amination of electron-rich, electron-neutral, and electron-poor aryl phosphates with a board range of aromatic, aliphatic, and heterocyclic amines. Common functional groups such as ether, keto, ester, and nitrile show an excellent compatibility in this reaction condition. The solvent-free amination reactions are also successful in both solid coupling partners. The gram-scale cross-coupling is achieved by this catalytic system.
