Phosphorus–nitrogen compounds. Part XLI. Reactions of hexachlorocyclotriphosphazatriene with dibenzylamine and benzylamine: the importance of steric effects. Isolation of a stable chlorodibenzyl-aminotetrakisdimethylamino-derivative

Abstract

Hexachlorocyclotriphosphazatriene, N₃P₃Cl₆, reacts with dibenzylamine to give two dibenzylarnino-derivatives. N₃P₃Cl_6–n[N(CH₂Ph)₂]_n(n= 1 or 2), and with benzylamine to give benzylamino-derivatives. N₃P₃Cl_6–n(NHCH₂Ph)_n[n= 1, 2 (two isomers), 4, or 6]. Dimethylamino-derivatives. N₃P₃Cl_6–n–m[N(CH₂Ph)₂]_n(NMe₂)_m, [n= 1, m= 1 (two isomers), 4, or 5; n= 2, m= 1 or 2)] and N₃P₃Cl_6–n–m(NHCH₂Ph)_n(NMe₂)_m[n= 1; m= 1 (two isomers); n= 2, m= 4, (two isomers)] have been prepared. The structures of these derivatives are deduced from n.m.r. spectroscopy. The role of steric effects in the reactions of N₃P₃Cl₆ with bulky nucleophiles, particularly in the isolation of the stable penta-aminomonochloro-derivative, N₃P₃Cl[N(CH₂Ph)₂](NMe₂)₄, is discussed.