Front Cover: Dinucleating N-donor Ligands with 1,2-Diethynylbenzene Backbone for the Copper-Mediated Monooxygenation of Phenols (Z. Anorg. Allg. Chem. 4/2024)

Alexander Koch, Benjamin Herzigkeit, Küpra Yildiz, Christian Näther, Tobias A. Engesser, Felix Tuczek
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Abstract

This cover picture shows an artistic representation of the conversion of monophenols to ortho-quinones mediated by dinuclear copper(I) complexes supported by tweezer-like ligands, thus serving as small-molecule model systems for the enzyme tyrosinase. We describe the first synthesis and characterization of the three different tweezer-like ligands Tw1-3 and their corresponding copper(I) complexes. In the picture, this class of ligands is exemplified by the pyrazole-terminated ligand Tw2. The hand holding the tweezers illustrates the ligand design that enables the corresponding complexes to hold dioxygen between their “tweezer arms”, mimicking the dinuclear active site of the enzyme and inducing the reaction with phenols. We would like to thank Philippa Kramer for the artistic design (DOI: 10.1002/zaac.202300237).

Abstract Image

封面:以 1,2-二乙炔基苯为骨架的二核化 N-供体配体用于铜介导的苯酚一氧化反应(Z. Anorg.)
这幅封面图片艺术性地展示了由镊子状配体支持的双核铜(I)配合物介导的单酚向邻醌的转化过程,因此可作为酪氨酸酶的小分子模型系统。我们首次描述了三种不同镊子状配体 Tw1-3 及其相应铜(I)配合物的合成和表征。图中,这类配体以吡唑末端配体 Tw2 为例。拿着镊子的手说明配体的设计使相应的配合物能够在其 "镊子臂 "之间夹住二氧,模拟酶的双核活性位点并诱导与苯酚的反应。感谢 Philippa Kramer 的艺术设计(DOI: 10.1002/zaac.202300237)。
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