Racemic as well as enantiomericallypure trans-1,1′-(cyclohexane-1,2-diyl)bis(imidazole N-oxides) were prepared from trans-cyclohexane-1,2-bis(methylidenamine) and 1,2-dione monooximes (α-hydroxyiminoketones). The enantiomeric purity of selected products was determined by means of 1H NMR spectroscopy in the presence of (+)-(R)-(tert-butyl)(phenyl)phosphonothioic acid as a chiral solvating agent. Deoxygenation
由反式-环己烷-1,2-双(甲亚胺)和1,2-二酮制备外消旋及对映体纯的反式-1,1'-(环己烷-1,2-二基)双(咪唑N-氧化物)一肟(α-羟基亚氨基酮)。在(+)-(R)-(叔丁基)(苯基)膦硫酸作为手性溶剂的存在下,通过1 H NMR光谱法测定所选产物的对映体纯度。用阮内镍处理脱氧得到相应的手性双咪唑。