Organic letters

K2CO3-Catalyzed Synthesis of Chromones and 4-Quinolones through the Cleavage of Aromatic C–O Bonds

J Zhao, Y Zhao, H Fu

Index: Zhao, Jie; Zhao, Yufen; Fu, Hua Organic Letters, 2012 , vol. 14, # 11 p. 2710 - 2713

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Citation Number: 34

Abstract

Phenol-derived electrophiles are favorable substrates because phenols are naturally abundant or can be readily prepared from other aromatic compounds. However, the cleavage of aromatic C–O bonds is a great challenge because of their high energy. K2CO3-

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~83%

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Transition??Metal??Free Intramolecular Ullmann??Type O??Aryl...

[Zhao, Jie; Zhao, Yufen; Fu, Hua Angewandte Chemie - International Edition, 2011 , vol. 50, # 16 p. 3769 - 3773]