Application of fluorocarbethoxy-substituted phosphonate: A facile entry to substituted 2-fluoro-3-oxoesters

HJ Tsai

Index: Tsai, Hou-Jen Phosphorus, Sulfur and Silicon and Related Elements, 1997 , vol. 126, p. 1 - 10

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Abstract

Abstract Diethyl (fluorocarbethoxymethyl) phosphonate 1a or diisopropyl ( fluorocarbethoxymethyl) phosphonate 1b, prepared from triethyl phosphite or triisopropyl phosphite with ethyl bromofluoroacetate, react with n-butyllithium in THF to give the corresponding phosphonate carbanions [(RO) 2P (O) CFCO2Et]− Li+ 2a (R= Et) and 2b (R= i-Pr). Addition of trimethylsilyltrifluoroacetate CF3C (O) OSiMe3 to a THF solution of ...

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