A one-pot lithiation–phosphonylation procedure was elaborated as a method to prepare heteroaromatic phosphonic acids. It relied on the direct lithiation of heteroaromatics followed by phosphonylation with diethyl chlorophosphite and then oxidation with hydrogen peroxide. This protocol provided the desired phosphonates with satisfactory yields. This procedure also had some limitations in its dependence
一种单锅
锂化-膦酰化程序被阐述为一种制备杂芳族
膦酸的方法。它依赖于杂
芳烃的直接
锂化,然后用
氯亚磷酸二乙酯进行膦酰化,然后用
过氧化氢氧化。该方案以令人满意的收率提供了所需的
膦酸盐。该程序在依赖于
锂化
杂环化合物的可及性和稳定性方面也有一些局限性。相同的程序可应用于芳香族化合物的膦酰化,芳香族化合物不进行直接
锂化,因此需要使用它们的
溴化物作为底物。当对三种癌
细胞系进行测试时,所获得的化合物显示出较弱的抗增殖活性。