Indole → 1-Octyl-1H-indole

Participants

Reaction Conditions

Reaction Steps

A solution of indole (1.0 g) in dry DMSO (1 ml) is dropped into a suspension of sodium hydride (60% mineral oil suspension; 0.37 g) in dry DMSO (20 ml). The mixture is heated at 60° C. for 1 h. After cooling to room temperature, the resulting solution is added dropwise with a solution of n-octyl bromide (2.82 ml) in dry DMSO (2.8 ml). After a night at room temperature, the reaction mixture is poured into water (200 ml) and extracted with ethyl acetate (2×50 ml). The combined organic phases are washed with a NaCl saturated solution, dried and evaporated to dryness. The resulting residue is purified by column chromatography (silica gel; eluent n-hexane), to obtain 1.86 g of 1-(n-octyl)indole as oil. The compound is characterized through its 1H-NMR spectrum.

Provenance & Evidence