作者:Marco Durini、Eleonora Russotto、Luca Pignataro、Oliver Reiser、Umberto Piarulli
DOI:10.1002/ejoc.201200516
日期:2012.10
second one. A library of 16 SupraBox ligands was prepared using 5 differently substituted oxazoline nuclei, 4 linkers and 3 different urea substituents. The formation of copper(II) and palladium(II) complexes was investigated by MS, UV/Vis and 1H-NMR spectroscopy. The SupraBox library was screened in the copper-catalyzed asymmetric benzoylation of vic-diols. Good selectivities were obtained in the kinetic
研究了一类新的恶唑啉配体,名为 SupraBox。这些配体具有额外的尿素官能度,通过在一个配体的尿素 N-氢和第二个配体的羰基氧之间建立氢键,在过渡金属配合物中生成超分子双齿配体。使用 5 个不同取代的恶唑啉核、4 个接头和 3 个不同的尿素取代基制备了 16 个 SupraBox 配体库。通过 MS、UV/Vis 和 1H-NMR 光谱研究了铜 (II) 和钯 (II) 配合物的形成。SupraBox 文库在铜催化的vic-二醇的不对称苯甲酰化中进行筛选。在外消旋氢安息香的动力学拆分 [高达 86 % ee 和选择性 (s) = 28] 和内消旋对苯二酚的去对称化(高达 88 % ee)中获得了良好的选择性。