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Download file1,1′-Bifunctional Aminophosphane Complexes via N–H Bond Insertions of a Li/Cl Phosphinidenoid Complex and First Studies on N/P Mono Functionalizations
journal contribution
posted on 2017-04-11, 16:55 authored by Rainer Streubel, Alexander Schmer, Andreas W. Kyri, Gregor SchnakenburgSyntheses of 1,1′-bifunctional
aminophosphane complexes 3–10 was
achieved by reacting Li/Cl phosphinidenoid
complex 2 (R = CPh3) with secondary (Me2NH, Et2NH, Bn2NH, pyrrolidine, and piperidine),
primary amines (EtNH2 and allyl amine), and ammonia. Furthermore,
regioselective N-silylation of 11 (R
= Me) was achieved using MeLi and Me3SiCl to give complex 12. In contrast, treatment of complex 6 with
KHMDS in the presence of 18-crown-6 yielded K/NMe2 phosphinidenoid
complex 13 subsequently reacted with MeI to give P–Me substituted 14. Complex 5 was deprotonated with KHMDS in the presence of 18-crown-6 and reacted
with [Ph3C]BF4 to yield complex 17 via single-electron transfer reaction and P,C-heterocoupling. Finally,
selective P–N bond cleavage was achieved by treating complex 18 (R = t-Bu) with HCl(g) to afford chlorophosphane
complex 19.