COMPOSES DU PHOSPHORE DICOORDONNE: REACTION DE DIAZA-1,4 DIENES-1,3 DISUBSTITUES SUR LES DERIVES DE DIAZAPHOSPHOLE, DU TRIAZAPHOSPHOLE-1,2,4,3 ET DE PRECURSEURS DE COMPOSES DU PHOSPHORE DICOORDONNE

Article abstract of DOI:10.1016/S0040-4039(00)84693-6

Addition of diazadienes 5 to dicoordinated phosphorus derivatives such as triazaphospholes 1 or diazaphospholes 3 leads to new tetracoordinated phosphorus spirocompounds 2 or 4.The tricoordinated phosphorus species 7 and 9 exist in a monomer P_II <*> tetramer P_III equilibrium but only the monomeric P_II form reacts with diazadienes 5 leading to the spirocompounds 8 and 10.The monomers of 7 and 9 stabilized by complexation react with 5 to afford spirocompounds analogous to 2 and 4.In all these reactions the dicoordinated phosphorus atom is a good electrophile.