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Molecules 2004, 9(10), 842-848; doi:10.3390/91000842
Article

A Novel Approach to the Synthesis of 6-Amino-7-hydroxy-flavone

1, 1,* , 1, 2, 1 and 1
1 State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116012, P. R. China 2 College of Chemistry & Chemical Engineering, Bohai University, Jinzhou, 121003, P. R. China
* Author to whom correspondence should be addressed.
Received: 8 May 2004 / Accepted: 8 July 2004 / Published: 30 September 2004
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Abstract

A novel approach to the synthesis of 6-amino-7-hydroxyflavone (1) is described. Reaction in acetone of 2′,4′-dihydroxy-5′-nitroacetophenone and benzoyl chloride in the presence of potassium carbonate affords 3-benzoyl-7-hydroxy-6-nitroflavone, which is cleaved in 5% ethanolic potassium hydroxide to give 1-(2,4-dihydroxy-5-nitrophenyl)-3- phenyl-1,3-propanedione. The 1,3-diketone thus formed is then transformed into 7-hydroxy- 6-nitroflavone, followed by reduction to afford the title compound.
Keywords: Flavones; 4H-1-benzopyan-4-one; aminoflavones; chromones Flavones; 4H-1-benzopyan-4-one; aminoflavones; chromones
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Tang, L.; Zhang, S.; Yang, J.; Gao, W.; Cui, J.; Zhuang, T. A Novel Approach to the Synthesis of 6-Amino-7-hydroxy-flavone. Molecules 2004, 9, 842-848.

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