Cyanation using the combined reagent, triphenyiphosphine–thiocyanogen (TPPT): a new general route to indole and pyrrole carbonitriles

Abstract
Various types of indoles, pyrroles, and enamines react with the combined reagent, Ph3P–(SCN)2(TPPT) under mild conditions to give the corresponding cyanated compounds in high yields. The reaction mechanism of the cyanation is discussed.

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