- The Direct Alkylamination of 1-Aminoanthraquinone Promoted by Cobalt(II) Chloride
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The reaction of 1-aminoanthraquinone with primary aliphatic amines in the presence of cobalt(II) chloride under atmospheric oxygen preferentially gave the corresponding 1-amino-4-(alkylamino)anthraquinones.The reaction did not proceed with aqueous ammonia, bidentate amines, secondary aliphatic amines, and primary arylamines.While, with alicyclic amines the reaction mainly afforded 1-amino-2,4-bis(alkylamino)anthraquinones.
- Yoshida, Katsuhira,Matsuoka, Masaru,Yamashita, Yoshio,Nagamori, Shoichi,Kitao, Teijiro
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p. 3725 - 3726
(2007/10/02)
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