Abstract
A new concise, facile method for synthesis of isoflavones was accomplished in moderate to good yields for 3-iodochromones or 3-bromochromones and arylzinc bromides via Negishi cross-coupling reaction catalyzed by \(\hbox {NiCl}_{2}/\hbox {PPh}_{3}\) or \(\hbox {NiCl}_{2}(\hbox {PPh}_{3})_{2}\) at room temperature. The Isoflavone core was synthesized in four steps in good yield, starting from commercially available 2-hydroxyacetophenone and aromatic bromide. Three steps of the procedure were carried out at room temperature.
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Acknowledgments
This research was supported by the National Natural Science Foundation of China (No: 21372150), the Fundamental Research Funds for the Central Universities (No: GK261001095), and the Science and Innovation Funds of Graduate Programs of Shaanxi Normal University (No: 2009CXS013).
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Zhang, Z., Qiao, J., Wang, D. et al. Synthesis of isoflavones by room-temperature nickel-catalyzed cross-couplings of 3-iodo(bromo)chromones with arylzincs. Mol Divers 18, 245–251 (2014). https://doi.org/10.1007/s11030-013-9495-1
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DOI: https://doi.org/10.1007/s11030-013-9495-1