摘要:
Potassium salt of diethyl (diphenylmethyleneamino)methanephosphonate reacts with pentafluoropyridine, octafluorotoluene, diethoxymethylpentafluorobenzene, or octafluoronaphthalene to afford, on product hydrolysis, the corresponding alpha-perfluoro(het)aryl substituted derivatives in high yield and regioselectivity. The method provides a new prospective route to fluorinated alpha-aminophosphonates. In the case of N-benzylidenepentafluoroaniline the outcome of the reaction is different and results in the formation of diethyl (pentafluorophenyl)amidophosphate. (C) 2012 Elsevier B.V. All rights reserved.