Chemoselective amination of bromoiodobenzenes with diarylamines by palladium/Xantphos or ligand-free copper catalysts

We report the chemoselective amination of bromoiodobenzenes with diarylamines by palladium/Xantphos or a ligand-free copper catalyst. The reactions by these two types of catalysts proceeded with a high chemoselectivity and afforded monobrominated triarylamines in good yields. These products are usef...

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Bibliographic Details
Published in:Tetrahedron 2015-03, Vol.71 (9), p.1395-1402
Main Authors: Kanazawa, Yoshinori, Yokota, Tomo, Ogasa, Hiroshi, Watanabe, Hirotaka, Hanakawa, Taisyun, Soga, Shinichi, Kawatsura, Motoi
Format: Article
Language:English
Subjects:
Amination
Chemoselectivity
Copper
Palladium
Triarylamine
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Summary:We report the chemoselective amination of bromoiodobenzenes with diarylamines by palladium/Xantphos or a ligand-free copper catalyst. The reactions by these two types of catalysts proceeded with a high chemoselectivity and afforded monobrominated triarylamines in good yields. These products are useful intermediates for the synthesis of unsymmetrical bistriarylamines. [Display omitted]
ISSN:0040-4020
1464-5416
DOI:10.1016/j.tet.2015.01.028