Dual reactivity of the phosphonium zwitterion formed by the reaction of triisopropylphosphine with ethyl 2-cyanoacrylate toward 2,4-dinitro- and 2,4,6-trinitrofluorobenzenes
Abstract:
A phosphonium zwitterion formed by the reaction of triisopropylphosphine with ethyl 2-cyanoacrylate possesses a dual reactivity: while this ion reacts with 2,4-dinitrofluorobenzene as a C-nucleophile, it reacts with 2,4,6-trinitrofluorobenzene as an N-nucleophile.