Metaphosphate and metaphosphonic anhydride formation by thermolysis of 5,6-oxaphosphabicyclo[2.2.2]octenes; electrophilic .alpha.-substitution on a pyrrole
Metaphosphate and metaphosphonic anhydride formation by thermolysis of 5,6-oxaphosphabicyclo[2.2.2]octenes; electrophilic .alpha.-substitution on a pyrrole