GB336394A - Manufacture of arylamino-phenol-carboxylic acids - Google Patents

Manufacture of arylamino-phenol-carboxylic acids

Info

Publication number
GB336394A
GB336394A GB2934029A GB2934029A GB336394A GB 336394 A GB336394 A GB 336394A GB 2934029 A GB2934029 A GB 2934029A GB 2934029 A GB2934029 A GB 2934029A GB 336394 A GB336394 A GB 336394A
Authority
GB
United Kingdom
Prior art keywords
hydroxy
methyldiphenylamine
carboxylic acids
arylamino
phenol
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2934029A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB2934029A priority Critical patent/GB336394A/en
Publication of GB336394A publication Critical patent/GB336394A/en
Expired legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Indole Compounds (AREA)

Abstract

336,394. Imray, O. Y., (I. G. Farbenindustrie Akt.-Ges.). Sept. 27, 1929. p-Arylaminophenol carboxylic acids are made bv treating a dry alkali salt of a p-arylaminophenol containing a free o-position to the hydroxyl group and no sulphonic acid groups with carbon dioxide at a raised temperature and pressure. The acids formed from 4-hydroxydiphenylamine, 4 - hydroxy - 2' - methyldiphenylamine, 4- hydroxy-3<1>-methyldiphenylamine, 4-hydroxy-4<1>- methyldiphenylamine, 4 - hydroxy - 3 - methyldiphenylamine (obtained from toluhydroquinone and aniline), 4-hydroxy-3-4<1>-dimethyldiphenylamine (obtained from toluhydroquinone and ptoluidine), and 4-hydroxy-3<1>-methoxydiphenylamine are specified. Specification 329,741 is referred to.
GB2934029A 1929-09-27 1929-09-27 Manufacture of arylamino-phenol-carboxylic acids Expired GB336394A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2934029A GB336394A (en) 1929-09-27 1929-09-27 Manufacture of arylamino-phenol-carboxylic acids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2934029A GB336394A (en) 1929-09-27 1929-09-27 Manufacture of arylamino-phenol-carboxylic acids

Publications (1)

Publication Number Publication Date
GB336394A true GB336394A (en) 1930-10-16

Family

ID=10289996

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2934029A Expired GB336394A (en) 1929-09-27 1929-09-27 Manufacture of arylamino-phenol-carboxylic acids

Country Status (1)

Country Link
GB (1) GB336394A (en)

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