Heterogeneous g‐C ₃ N ₄ Photocatalyzed Platform for Diverse CH Functionalization of Heteroarenes With Hydrazines

Herein, we report a visible‐light‐driven heterogeneous photocatalytic system employing g‐C 3 N 4 for the divergent CH functionalization of heteroarenes. This strategy features broad substrate compatibility across diverse heteroarenes and hydrazine derivatives, delivering the corresponding products in moderate to good yields. The synthetic practicality of this method is further demonstrated through successful scale‐up experiments, diverse product transformations, and the excellent recyclability of the catalyst, which maintained consistent performance over multiple cycles, underscoring its potential utility in organic synthesis.