An efficient, ligand-free palladium-catalyzed method for the cross coupling reaction of pentafluor-benzene with phenols was developed. This reaction proceeds via a highly selective C-F bond activation in the 3-position and is compatible with a variety of functional groups, delivering polyfluorinated aryl ethers in moderate to excellent yields. (C) 2013 Elsevier B.V. All rights reserved.
Synthesis of polyfluorinated aromatic ethers and thioethers by synergistic cleavage of C-B bond and C-F bond of B(C6F5)3
A concise and efficient method for the synthesis of polyfluorinated aromaticethers and thioethers by synergistic cleavage of C-B bond and C-F bond of B(C6F5)3 is reported. The reaction could proceed smoothly with excellent functional-group compatibility. In addition, the transformation represents the first general application of B(C6F5)3 as reaction partners in cross-coupling reaction.
报道了一种通过协同裂解 B(C 6 F 5 ) 3的 CB 键和 CF 键合成多氟芳族醚和硫醚的简洁有效的方法。反应可以顺利进行,具有良好的官能团相容性。此外,该转变代表了 B(C 6 F 5 ) 3作为交叉偶联反应中的反应伙伴的首次普遍应用。