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Palladium-catalyzed arylations in 4-pyrone systems: 2,6-diaryl-3,5-dibromo-4-pyrones and kojic acid

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Abstract

Palladium-catalyzed cross-coupling reactions of 2,6-diaryl-3,5-dibromo-4-pyrones with imidazole and benzimidazole in the presence of N,N′-dibutylbenzimidazol-2-ylidene as ligand resulted in the formation of the monosubstituted C- and N-arylated products. Kojic acid was also treated with some aryl halides at the same conditions, to afford C-6 arylated derivatives.

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Acknowledgments

We are grateful to Research Affair of the University of Tabriz for financial support.

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Correspondence to Aziz Shahrisa.

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Ghasemi, Z., Poorhossain Mejarshin, F., Fathi, Z. et al. Palladium-catalyzed arylations in 4-pyrone systems: 2,6-diaryl-3,5-dibromo-4-pyrones and kojic acid. Monatsh Chem 147, 1107–1111 (2016). https://doi.org/10.1007/s00706-015-1589-2

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  • DOI: https://doi.org/10.1007/s00706-015-1589-2

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