Indole derivatives
Abstract3-Aminoindole was obtained by the action of alkali on its hydrochloride in a reductive medium. Acylation of 3-aminoindole with acetic anhydride gave its mono-, di-, and triacetyl derivatives, whereas reaction with p-substituted benzenesulfonyl chlorides gave the corresponding N-3-indolylsulfonamides. The reaction of 3-aminoindole with aromatic aldehydes gives Schiff bases.