Antifungal agents. Part 4: Synthesis and antifungal activities of novel indole[1,2-c]-1,2,4-benzotriazine derivatives against phytopathogenic fungi in vitro

► Indole[1,2-c]-1,2,4-benzotriazine derivatives were synthesized by a modified Sandmeyer reaction. ► Their antifungal activities were tested against phytopathogenic fungi. ► Two compounds exhibited the promising and pronounced antifungal activities.