Starting from diethyl benzylphosphonates, a wide variety of diethyl α-monofluoro, chloro, bromo and iodobenzylphosphonates have been obtained in pure form by a one-pot procedure. This high yielding method implies the intermediate protection of the benzyl anion with TMSCl followed by halogenation with an electrophilic halogenating reagent.
从
二乙基苄基膦酸酯开始,已经通过一锅法以纯净形式获得了多种α-单
氟二乙基氯,
氯代,
溴代和
碘代苄基
膦酸酯。这种高产率的方法意味着用TMSC1对苄基阴离子进行中间保护,然后用亲电卤化试剂进行卤化。