Preparation process of indole

Details Preparation process of indole Preparation process of indole

C - Chemistry, Metallurgy

07

D

202/88, 260/319.

C07D 209/08 (2006.01)

Patent

CA 1254220

- 22 - Abstract In an industrial process for preparing indole by reacting aniline and ethylene glycol, high boiling- point impurities and non-volatile substances are removed in advance from the reaction mixture either before the recovery of aniline from the reaction mixture or before the subsequent rectification of the resultant indole. Indole of a high purity can thus be obtained.

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