Synthesis of Phosphonates with Identical and Different Alkyl Groups by the Microwave‐Assisted Alkylation of Phosphonic Ester‐Acid Derivatives
作者:György Keglevich、Nikoletta Harsági、László Drahos、Nóra Zsuzsa Kiss
DOI:10.1002/cplu.202200342
日期:2023.2
Dialkyl alkylphosphonates with identical or different alkoxy groups were synthesized by the alkylation of monoalkylphosphonic derivatives by haloalkanes in the presence of triethylamine at 135 °C under solvent-free microwave-assistedconditions. After an easy work-up comprising flash chromatography, the products were obtained in 80–93 % yields.
在无溶剂微波辅助条件下,在三乙胺存在下,在 135 °C 下,通过卤代烷烃对单烷基膦酸衍生物进行烷基化,合成具有相同或不同烷氧基的烷基膦酸二烷基酯。经过包括快速色谱在内的简单后处理后,以 80–93% 的收率获得了产品。
Polymer-supported sulfonated magnetic resin: an efficient reagent for esterification of O-alkyl alkylphosphonic-and carboxylic-acids
A mild and efficient synthetic method has been developed for the esterification of O-alkyl alkylphosphonic-and carboxylic-acids usingpolymer-supported sulfonated magnetic resins. Polymer-supported resins are recovered using an external magnet and reused several times.