Condensation of diethyl phosphite with aldehydes followed by subsequent sulfonylation of the resulting hydroxy group formed with mesyl chloride gave the corresponding 1-sulfonyloxyalkylphosphonates, which led to the convenient synthesis of 1-hydrazinoalkylphosphonates via nucleophilic substitution by hydrazine. The products could be converted to the corresponding 1-hydrazinoalkylphosphonic acids by acid hydrolysis in high yield.
将
亚磷酸二乙酯与醛缩合,然后用甲
磺酰氯对由此形成的羟基进行磺化反应,可得到相应的 1-磺酰氧基烷基
膦酸盐,从而通过
肼的亲核取代作用方便地合成 1-
肼基烷基
膦酸盐。通过酸
水解,这些产物可以高产率地转化为相应的 1-
肼基烷基
膦酸。