442690-70-2Relevant academic research and scientific papers
Synthesis and deprotonation of a phosphinomethylimidazolium Salt. On the π-electron delocalization im aminovinyl phosphanes [1]
Kuhn, Norbert,Goehner, Martin,Steimann, Manfred
, p. 896 - 900 (2002)
The ylidic olefin 1,3,4,5-tetramethyl-2-methyleneimidazoline (1, Im=CH2) reacts with chlorodiphenylphosphane to give the phosphane salt [(Im-CH2)PPh2]Cl (6) from which the vinylphosphane Im=CHPPh2 (8) is obtained by deprotonation. 8 reacts with HBF4 etherate to give the tetrafluoroborate salt [(Im-CH2)-PPh2]BF4 (7). The crystal structures of 7 and 8 are determined and discussed. In 8, π-electron delocalisation is indicated both by structural data and temperature dependent n.m.r. spectroscopy.
