To illustrate preparation of typical compounds of this invention using a chlorinated pyrimidine as the heterocyclic compound, one of the basic nitrogen atoms of an alkenylsuccinimide amine (the terminal nitrogen atom) having the structure ##STR10## or a bis(alkenylsuccinimide)amine (one of the inner nitrogen atoms) having the structure ##STR11## wherein R' is an alkenyl group, m an e having the a