Selective mono- and diamination of some polyhalogenbenzenes in anhydrous ammonia

- Aminodefluorination of polyhalogenbenzenes in anhydrous ammonia was investigated.
- The optimal conditions for selective introducing one and two amino groups were elucidated.
- Purification of the crude products is feasible by using simple experimental procedures.
- Potentially scalable method to prepare valuable polyfluoroarylenediamines was developed.