Naphthyl-substituted bisoxazoline and pyridylbisoxazoline–copper(I) catalysts for asymmetric allylic oxidation
作者:Ziniu Zhou、Merritt B. Andrus
DOI:10.1016/j.tetlet.2012.06.010
日期:2012.8
The synthesis of naphthyl substituted malonyl-derived and pyridine-based bisoxazolines and their applications in the asymmetric allylic oxidation of cyclohexene with t-butyl p-nitroperbenzoate have been performed with much improved reactivity (75% yield) while maintaining very good enantioselectivity (85% ee). A 1-naphthyl group as the side chain of the oxazoline ligand was found to be optimal. Correlations
进行了萘基丙二酰取代的和吡啶基的双恶唑啉的合成及其在环己烯与对硝基过苯甲酸叔丁酯的不对称烯丙基氧化反应中的应用,其反应活性大大提高(75%收率),同时保持了很好的对映选择性(85%) ee)。发现以1-萘基作为恶唑啉配体的侧链是最佳的。已经确定了双恶唑啉上取代基的性质与反应性/选择性之间的相关性。还合成并使用了具有萘基的三齿吡啶基双恶唑啉配体。