Process for extracting indoles

Details Process for extracting indoles Process for extracting indoles

1991-04-22

1993-07-20

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210511, B01D 1104

Patent

active

052290018

ABSTRACT:
The invention provides a process for the extraction of indoles which comprises the steps of firstly extracting indoles from an indoles containing mixture with formamide or a formamide-containing solution and subsequently contacting the extract with at least one organic solvent selected from the group consisting of ethers, aromatic hydrocarbons and halogenated hydrocarbons to recover indoles with the organic solvent. This process is applicable to an industrial scale extraction of indoles, because the extraction solvent system has a high extraction selectivity of indoles, is required in a small amount with almost no losses through the extraction and recovery steps and can be used repeatedly.

REFERENCES:
patent: 4025347 (1977-05-01), Beretta et al.
patent: 4585472 (1986-04-01), Hamprecht et al.
European Search Report (2 pages).
Chemical Abstracts vol. 99, Nov. 28, 1983, No. 22.

Affiliated with

Also associated with

Rating

Process for extracting indoles does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for extracting indoles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for extracting indoles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1758213