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An efficient procedure has been developed for the synthesis of bis(indolyl)methanes  (3a-m)  from condensation of indole  (1)  and various substituted aromatic aldehydes  (2a-m)  is described. The aromatic electrophilic substitution reactions of indole  (1)  with and various substituted aromatic aldehydes  (2a-m)  are achieved in solvent- and catalyst free condition using irradiation with 150W tungsten lamp (visible light irradiation). This methodology offers several advantages such as good yields, simple procedure, mild and environmentally benign conditions.

Green Approach of Solvent- and Catalyst Free Synthesis of Bis(indolyl)methanes under Visible Light Irradiation