A distinct novel approach for the synthesis of 3-indolyl-methanamines starting from indoles, aldehydes and nitrobenzenes in water

3-Indolyl-methanamines have efficiently been synthesized by the treatment of indoles with aldehydes and nitrobenzenes using indium in aqueous HCl at room temperature. The products are formed in excellent yields (91–98%) within a short period of time (30–45 min). Bisindolyl methanes have not been obtained under the present reaction conditions.