Intermediate 6-cyanoindole was obtained from 4-methylbenzonitrile as a raw material via nitration with the mixed acid, condensation with N,N-dimethylformamide dimethyl acetal and cyclic reaction with Raney nickel-hydrazine.

The Effect of Inulin on 3-methylindole in Adipose Tissue of Pigs;

Starting from o-nitroethylbenzene,a mass-produced byproduct of chloramphenicol industry,through condensation,catalytic hydrogenation and catalytic cyclization,3-methylindole was sucessfully synthesized.

Ag/SiO2 was used as an efficient catalyst for the vapor-phase synthesis of 3-methylindole from aniline and 1,2-propanediol at atmospheric pressure.

The progress in synthesis of 3-alkylindoles from indoles, such as bis(indolyl)methanes, p-indolylketones, P-indolylalcohols, β-indolylnitro-compounds, α-indolylmethylamines, was reviewed in recent years.