Nickel-catalyzed triarylamine synthesis: Synthetic and mechanistic aspects
An improved protocol was described for the amination of chloroarenes with diarylamines under NiCl2(PCy3)2 catalysis in the presence of a Grignard reagent as base. This method fully suits bromo-/iodoarene substrates as well, and even is expanded to certain aryl tosylates. A preliminary investigation into the mechanism suggests that this amination reaction might proceed through NiI and NiIII intermediates rather than via the usually expected Ni0-Ni II cycle.
Li, Xin-Le,Wu, Wei,Fan, Xin-Heng,Yang, Lian-Ming
supporting information
p. 1232 - 1236
(2014/03/21)
Pd-PEPPSI-IPentCl: An effective catalyst for the preparation of triarylamines
Third times a charm: A new Pd-NHC catalyst, Pd-PEPPSI-IPentCl, has been developed for applications in amination reactions for the preparation of triarylamines. The catalyst can be used under mild conditions (carbonate base/dioxane, 80 °C) to perform multiple aminations in sequence from simple aniline derivatives that contain highly base-sensitive functional groups. Copyright
Hoi, Ka Hou,Coggan, Jennifer A.,Organ, Michael G.
supporting information
p. 843 - 845
(2013/02/23)
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