been carried out in methanol containing sodium cyanide at a platinum anode in a divided cell. In all instances, replacement of a heteroaromatic hydrogen by a cyano group occurred. On the basis of electroanalytical results, the anodiccyanation of the title compounds could be designed an EC process. As a result of two-electron oxidation, the corresponding pyrrole cyanides were obtained in yields ranging
AbstractWith nitromethane and diphenylsilane (Ph2SiH2), zinc triflate behaves as a Lewis acid catalyst for the cyanation of nitrogen‐containing heteroarenes such as indoles and pyrroles. This is the first realization of the Lewis acid‐catalyzed direct cyanation of a C(aryl)H bond with no CN group‐containing cyanating agent.magnified image