| abstract |
NITROGEN-HETEROCYCLIC PHOSPHONATES WHEREIN THE PHOSPHONATE GROUP IS ORTHO- OR PARA- TO THE NITROGEN HETEROCYCLIC GROUP, WHERE THE COMPOUNDS ARE CHARACTERIZED AS FOLLOWS: ((-)O-)2-P(=O)-C<(-N--) AND ((-)O-)2-P(=O)-C<(-C-C-N--) WHEREIN THE DOTTED LINE REPRESENTS A CYCLIC STRUCTURE WHICH CYCLIC STRUCTURE MAY BE THE SOLE CYCLIC STRUCTURE, OR MAY BE ATTACHED TO OTHER CYCLIC GROUPS. THESE NITROGEN HETEROCYCLIC PHOSPHONATES ARE PREPARED BY REACTING AN AROMATIC NITROGEN HETEROCYCLIC COMPOUND, WHEREIN THE NITROGEN ATOM IS IN THE FORM OF A SALT OR A QUATERNARY, WITH A PHOSPHITE SALT, PREFERABLY IN THE FORM OF ESTERS OF THE PHOSPHITE AS EXEMPLIFIED BY THE FOLLOWING EQUATION: R''-N(+)<(=C-C=C--) + M-P(=O)(-O-R)2 --> R''-N<(-C(-P(=O)(-O-R)2)-C=C--) AND/OR R''-N<(-C=C-C(-P(=O)(-O-R)2)--) |