The published synthesis of phenolic diazirine was shown to result in products which were chlorinated during the hypochlorite oxidation while the desired unchlorinated product was lost during the usual work-up. A superior synthesis is described: inclusion of pyridine during the oxidation step prevents the chlorination; the desired volatile diazirine was isolated in good yield using silica gel and reverse phase high pressure liquid chromatography.
已发表的
酚二氮烯合成表明,在
次氯酸氧化过程中产生的产物被
氯化,而期望的未
氯化产物在通常的工作过程中丢失。描述了一种更优越的合成方法:在氧化步骤中加入
吡啶可防止
氯化;使用
硅胶和反相高压
液相色谱法可以高产率地分离所需的挥发性
二氮烯。