Increased catalytic activity through ZnMoO/g-CN heterostructured assemblies for greener indole condensation reaction at room temperature.

As an economical conjugated polymer, graphitic carbon nitride (g-CN) has recently attracted much attention due to its exciting chemical and thermal stability and easy availability. Herein, we constructed a metal-coordinated graphitic carbon nitride (M-g-CN) catalyst through simple impregnation and calcination methods and used it as a new heterogeneous catalyst for the efficient synthesis of bis (indolyl) methanes and trisindolines under mild conditions. This reaction is performed efficiently in water as an environmentally friendly solvent at ambient conditions.