Fgn. Cloke et al., Remarkable transformation of 2,4,6-tri-tert-butyl-1,3,5-triphosphabenzene into the 2,4,5-tri-tert-butyl-1,3-diphosphacyclopentadienide anion, ORGANOMETAL, 19(3), 2000, pp. 219-220
In an unprecedented reaction, the reduction of 2,4,6-tri-tert-butyl-1,3,5-t
riphosphabenzene over a potassium mirror in toluene resulted in the abstrac
tion of P3- and generation of the 2,4,5-tri-tert-butyl-1,3-diphosphacyclope
ntadtenide anion, P2C3Bu3t- (3) The potassium salt of this anion was charac
terized by an X-ray crystallographic study.