Synthesis and characterization of new imidophosphanes and phosphine oxides containing 3,3,4,4-tetramethylsuccinimidyl group

Abstract A series of new imidophosphanes and phosphine oxides containing 3,3,4,4-tetramethylsuccinimidyl group were synthesized and characterized by 1 H, 13 C{ 1 H} and 31 P NMR spectroscopy, IR and MS. Ph m PCl n ( m  = 3 −  n , n  = 3, 2, 1) reacted with 3,3,4,4-tetramethylsuccinimide (TH) and potassium 3,3,4,4-tetramethylsuccinimidate 1 to give corresponding Ph m PT n . Molecular structures of products were established by single-crystal X-ray diffraction experiments. Attempts to prepare new imidophosphoranes by reactions of 1 with Ph m PCl n ( m  = 5 −  n , n  = 4, 3, 2) resulted in phosphine oxides. In these reactions the phosphoryl group was formed and we characterized a by-product of this type of reaction.