-Acylation and -allylation of β,β,β-trifluoropropionic esters via the ketene silyl acetals
作者:Tsutomu Yokozawa、Takeshi Nakai、Nobuo Ishikawa
DOI:10.1016/0040-4039(84)80048-9
日期:——
α-Acylation of the ketenesilylacetal of methyl β,β,β-trifluoropropionate and α-allylation via the ester enolate Claisen rearrangement of the 2-alkenyl trifluoropropionates are described which provide the corresponding α-CF3 β-ketoesters and α-CF3 γ,δ-unsaturated acids, respectively.
(Trifluoromethyl)ketene silyl acetal as an equivalent to the trifluoropropionic ester enolate: preparation and aldol-type reactions with acetals
作者:Tsutomu Yokozawa、Takeshi Nakai、Nobuo Ishikawa
DOI:10.1016/0040-4039(84)80047-7
日期:——
The title reagent, readily prepared from methyl β,β,β-trifluoropropionate with trimethylsilyl triflate, is shown to react with a broad variety of acetals to provide the corresponding α-CF3 β-alkoxy esters in good yields.