Synthesis, Structure, and Reactivity of Stable PN Heterocycles with Two and Six Methyleneamine Units: [H₂CNN(Me)]₂ P(S)(Ph) and [H₂CNN(Me)]₆P₃N₃

Abstract

Since it remains unchanged after several days in air and several months under H2O-free argon, the hydrazone 1 is unexpectedly stable; however, methyleneamines RNCH2 rapidly di-, tri-, or polymerize. Compound 1 reacts with (iPr2N)CF3SO as an imine not as a hydrazone-and affords the cationic heterocycles 2 and 3 (counterion is CF3).