Synthesis of Diaminophosphonium Salts [Ph<sub>2</sub>(ArNH)<sub>2</sub>P]<sup>+</sup>Br<sup>−</sup> (Ar = <i>o</i>-MeC<sub>6</sub>H<sub>4</sub>, <i>p</i>-MeC<sub>6</sub>H<sub>4</sub>, <i>p</i>-Pr<sup> <i>i</i> </sup>C<sub>6</sub>H<sub>4</sub>, <i>p</i>-EtO<sub>2</sub>CC<sub>6</sub>H<sub>4</sub>, <i>p</i>-MeOC<sub>6</sub>H<sub>4</sub>)
作者:O. V. Gusev、N. A. Ustynyuk、T. A. Peganova、A. V. Gonchar、P. V. Petrovskii、K. A. Lyssenko
DOI:10.1080/10426500802116073
日期:2009.2.3
The behavior of different anilines H2NC6H4R (R = o-Me, p-Me, o-, m- and p-iPr, p-OMe, p-CO2Et) and 2,6-Me2C6H3NH2 towards trihalophosphoranes was studied. 2,6-Me2C6H3NH2 failed to form the diaminophosphonium salt [Ph2PNH(2,6-Me2C6H3)2]Br, and the aminophosphine oxide Ph2(2,6-Me2C6H3NH)PO was the only isolated product. Both o- and p-toluidine gave the corresponding diaminophosphonium salts; however in the case of o-toluidine, the yield was low and a mixture with the respective aminophosphine oxide was observed. Anilines containing methoxy and ethoxycarbonyl groups in para-position form the diaminophosphonium salts in reasonable yields.