The aminophosphine C6H4(o-CN)NHPPh2, 1, containing an electron-withdrawing nitrile group, was prepared from the lithiation of 2-aminobenzonitrile followed by addition of Ph2PCl. Lithiation of 1 using (BuLi)-Bu-n affords the anion Ph2PN(Li)C6H4(o-CN)(thf), 2. Compound 2 reacts with Ph2PCl or Mel to afford C6H4(o-CN)N=PPh2-PPh2, 3, and C6H4(o-CN)N=PPh2(CH3)(Lil)(C2H5O), 4, respectively, In these products new P-P and P-C bonds have been formed rather than N-P and N-C bonds. The structures of 1-4 have been determined by single-crystal X-ray diffraction analysis, and the synthetic results are discussed in terms of the structural data and NMR spectroscopic studies.
Rosario Scopelliti, Kay Severin, Farzaneh Fadaei Tirani, Laura Piveteau, Bastiaan Kooij, Zhaowen Dong, Paul Varava
Paul Joseph Dyson, Farzaneh Fadaei Tirani, Mouna Hadiji