223762-69-4Relevant articles and documents
A waste-minimized protocol for copper-catalyzed Ullmann-type reaction in a biomass derived furfuryl alcohol/water azeotrope
Ferlin, Francesco,Trombettoni, Valeria,Luciani, Lorenzo,Fusi, Soliver,Piermatti, Oriana,Santoro, Stefano,Vaccaro, Luigi
supporting information, p. 1634 - 1639 (2018/04/12)
We report the use of biomass-derived furfuryl alcohol as an effective bidentate ligand able to promote the Ullmann-type copper-catalyzed coupling of aryl halides with heteroaromatic or aliphatic amines. Furfuryl alcohol (FA) can be mixed with water to form the corresponding azeotrope (20 wt% of FA) and therefore can be easily recovered and reused. This protocol is efficiently applied to substrates with various electronic nature and affords the expected products (27 examples) in generally good to excellent yields. It has also been demonstrated that the protocol is both chemically and environmentally effective as the azeotropic mixture can be easily and almost quantitatively recovered at the end of the process.
Copper-catalysed N-arylation of pyrrole with aryl iodides under ligand-free conditions
Liu, Lili,Wu, Fengtian,Liu, Yan,Xie, Jianwei,Dai, Bin,Zhou, Zhuoqiang
, p. 180 - 182 (2014/04/17)
A simple, inexpensive and ligand-free copper-catalysed N-arylation of pyrrole with aryl iodides has been developed giving N-arylated products in moderate to excellent yields. The catalyst loading is relative low (5 mol%) and the catalyst system was stable in air.
Efficient copper-catalyzed ullmann reaction of aryl bromides with imidazoles in water promoted by a pH-Responsive ligand
Lv, Rui,Wang, Yangxin,Zhou, Chunshan,Li, Liuyi,Wang, Ruihu
, p. 2978 - 2982 (2013/10/21)
A series of 1,10-phenanthroline derivatives were used as supporting ligands for copper-catalyzed Ullmann reaction in neat water. The catalytic system based on 4,7-dihydroxy-1,10-phenanthroline has demonstrated the promising catalytic performances for aryl