25699-82-5Relevant academic research and scientific papers
L -(-) -Quebrachitol as a Ligand for Selective Copper(0)-Catalyzed N-Arylation of Nitrogen-Containing Heterocycles
Zhou, Qifan,Du, Fangyu,Chen, Yuanguang,Fu, Yang,Sun, Wenjiao,Wu, Ying,Chen, Guoliang
, p. 8160 - 8167 (2019/06/28)
l-(-)-Quebrachitol (QCT) has been found as a ligand of copper powder for selective N-arylation of nitrogen-containing heterocycles with aryl halides. Furthermore, another potential catalytic system (copper powder/QCT/t-BuOK) was successfully adapted to unactivated aryl chlorides.
Copper-catalyzed arylation of nitrogen heterocycles from anilines under ligand-free conditions
Toummini, Dounia,Tlili, Anis,Bergs, Julien,Ouazzani, Fouad,Taillefer, Marc
supporting information, p. 14619 - 14623 (2015/01/09)
The arylation of pyrazole and derivatives can be achieved by coupling arenediazonium species (formed in situ from anilines) by using a catalytic system that employs low-toxicity and inexpensive copper metal under very mild and ligand-free conditions (T = 20 ° C). From other nitrogen heterocycles, the presence of an additive (NBu4I) significantly improves the efficiency of the catalytic system. These results represent the first examples of C-N bond formation from arenediazonium species.
An Ullmann coupling of aryl iodides and amines using an air-stable diazaphospholane ligand
Yang, Minghua,Liu, Fei
, p. 8969 - 8971 (2008/03/27)
(Chemical Equation Presented) A copper-based catalytic system, using an air-stable diazaphospholane as the ligand, was developed for an efficient Ullmann reaction between aryl iodides and alkyl or heterocyclic amines.
Solvent-free preparation of tris-pyrazolyl-1,3,5-triazines
De La Hoz, Antonio,Díaz-Ortiz, Angel,Elguero, José,Martínez, Luis J.,Moreno, Andrés,Sánchez-Migallón, Ana
, p. 4397 - 4403 (2007/10/03)
Tris-pyrazolyl-1,3,5-triazines have been prepared by cyclotrimerization of aromatic nitriles in solvent-free conditions. The interesting structures of these compounds make them candidates for application in coordination chemistry and crystal engineering.
