3,4-Disubstituted 4-deazatoxoflavin derivatives (II) were prepared by the condensation of 6-(1-methylhydrazino)uracils (I) with appropriate α-diketones. The compounds II oxidized long-chain alkylamines such as n-octylamine and n-dodecylamine besides benzylamine and cyclohexylamine to yield the corresponding carbonyl compounds via imines, catalytically with a markedly high turnover number.
3,4-二取代的 4-脱氮氧代黄素衍生物 (II) 是通过 6-(1-甲基肼基) 尿嘧啶 (I) 与适当的 α-二酮缩合制备的。除了苄胺和环己胺外,化合物II氧化长链烷基胺如正辛胺和正十二胺,通过亚胺产生相应的羰基化合物,催化转化率显着高。