Organic Letters 2007-03-29

Rapid and efficient microwave-assisted copper(0)-catalyzed ullmann coupling reaction: general access to anilinoanthraquinone derivatives.

Younis Baqi, Christa E Müller

Index: Org. Lett. 9(7) , 1271-4, (2007)

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Abstract

[structure: see text]. The synthesis of anilinoanthraquinones 3a-z was achieved by a new, Cu(0)-catalyzed, microwave-assisted Ullmann coupling reaction of bromaminic acid (1) with aniline derivatives 2a-z in phosphate buffer. Good to excellent isolated yields were obtained within only 2-20 min at 80-120 degrees C and 40-100 W. The new procedure provides the first general access to anilinoanthraquinones, furnishing a number of previously inaccessible compounds. It is superior to classical methods in all aspects, including yields, reaction time, and versatility.

Related Compounds

  • 1-amino-4-bromoant...

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