Synthesis and CH-acidity of N,N-disubstituted aminotriphenylphosphonium salts
作者:M. I. Kabachnik、D. I. Lobanov、A. G. Matveeva、O. E. Kovsheva、M. I. Terekhova、�. S. Petrov、P. V. Petrovskii、E. I. Matrosov
DOI:10.1007/bf00961243
日期:1991.7
Several substituted methylaminotriphenylphosphonium salts (APS) of general formula Ph3PN+(R)CH2R']X- have been synthesized. The CH-acidities of some of the prepared APS have been measured by the indicator method in DMSO, with K+ counterion and 9-phenylfluorene (pK 18.5) as standard, showing a pK range of 14.7-24.8. The acidification effect of Ph3PN+(Ph) ((sigma)CH2- = 0.70) and Ph3PN+(Bu) ((sigma)CH2- = 0.68) groups has been evaluated. The results obtained suggest that there is an effective charge on the nitrogen atom in the APS studied and an increased multiplicity of the N-P bond.
Kabachnik, M. I.; Lobanov, D. I.; Matveeva, A. G., Phosphorus, Sulfur and Silicon and the Related Elements, 1991, vol. 62, # 14, p. 243 - 250
作者:Kabachnik, M. I.、Lobanov, D. I.、Matveeva, A. G.、Kovsheva, O. E.、Terekhova, M. I.、et al.