Synthesis of α-fluorinated phosphonoacetate derivatives using electrophilic fluorine reagents: Perchloryl fluoride versus 1-chloromethyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate) (Selectfluor®)
作者:Mong S. Marma、Leslie A. Khawli、Vahak Harutunian、Boris A. Kashemirov、Charles E. McKenna
DOI:10.1016/j.jfluchem.2005.04.002
日期:2005.12
1051–1056], the reaction proceeded in THF without the need for DMF as a co-solvent. This method is more selective and provides greater convenience and safety than fluorination of the same substrate by treatment with t-BuOK and perchloryl fluoride (FClO3) in toluene while offering advantages over a number of previously described methods employing alternative electrophilic fluorinating reagents or other approaches
三乙基fluorophosphonoacetate和三乙基difluorophosphonoacetate直接从膦酰基乙酸三合成由治疗用NaH和1-氯甲基-4-氟-1,4-二氮鎓双环[2.2.2]辛烷双(四氟硼酸盐)(的Selectfluor ®)。与最近的一份报告相反[CJ Hamilton,SM Roberts,J。Chem。理学硕士,Perkin Trans。1(1999)1051–1056],反应在THF中进行,而无需DMF作为助溶剂。与通过t- BuOK和高氯酰氟(FClO 3),同时提供了优于使用替代性亲电氟化试剂的其他前述方法或其他方法的优势。无论是单氟或二氟的产物可以通过调节碱和的Selectfluor的摩尔比主要得到®。三乙基2-氟-2-膦酰基(2-(二乙氧基氧膦基)-2- fluoropropanoate)也更方便使用的NaH /三乙基的Selectfluor 2- p