20734-56-9
1-N,8-N-dimethylnaphthalene-1,8-diamine
+
18116-10-4
2-chloro-1,3-dimethylbenzimidazolinium tetrafluoroborate
→
~72%
99643-43-3
1,1',3,3'-tetramethylspiro[benzimidazole-2,2'-perimidine]