Diarylamine arene

Diarylamines. A method for phenylamination of arenes is by warming with PhN,-TfOH. 

The reactions of diarylamines with aryl halides is more straightforward than the reaction of secondary alkylamines because these substrates possess no hydrogens on the a carbon and cannot, therefore, nndergo /3-hydrogen elimination as palladium amides. However, competitive formation of arene by an nnknown mechanism remains one side prodnct. For the most part, the synthesis of triarylamines has focused on the preparation of discrete molecules and polymers that are important for electronic materials applications,... 

Triarylamines attracted considerable interest because of their potential as novel organic electronic materials [113-115]. Hartwig et al. [116] demonstrated tlie potential of P(tBu)3 (26) or DPPF (9) for such applications in the synthesis of dendrimeric triarylamines. Hole-transporting organic materials were synthesized from poly-brominated arenes and diarylamines using only 0.025 mol% of Pd(OAc)2/P(fBu)3 (26) (Scheme 13.68) [117]. 

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