Studies in phosphorylation. Part XXIX. The synthesis of dialkyl phosphates from monoalkyl phosphonates: direct oxidative esterification
作者:G. M. Blackburn、J. S. Cohen、Lord Todd
DOI:10.1039/j39660000239
日期:——
Dialkyl hydrogen phosphates, RO(R′O)PO2H, are produced from monoalkyl hydrogen phosphonates, RO(HO)PHO, by oxidation either with bromine in pyridine or with carbon tetrachloride and triethylamine with stoicheiometric quantities of an alcohol. In the absence of an alcohol, the former reagent gives sym-dialkyl dihydrogen pyrophosphates in good yield. The nature of the phosphorylating entity in each system
磷酸二烷基氢酯RO(R'O)PO 2 H由膦酸单烷基氢酯RO(HO)PHO通过在吡啶中的溴或四氯化碳和三乙胺与化学计量的醇氧化而制得。在不存在醇,前者试剂赋予符号二烷基焦磷酸二氢盐以良好的收率。讨论了每个系统中磷酸化实体的性质。