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
GB13265/29A
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 AGfiledCriticalIG Farbenindustrie AG
Publication of GB310757ApublicationCriticalpatent/GB310757A/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Indole Compounds
(AREA)
Abstract
310,757. L, G. Farbenindustrie Akt.- Ges. April 28, 1928, [Convention date]. o-Carboxyamidearylthioglycollic acids are obtained by hydrolyzing o-cyanarylthioglycollic acids by means of an aromatic sulphonic acid. Especially suitable are technical mixtures of naphthalene or phenol sulphonic acids, which contain small quantities of free sulphuric acid. According to examples : (1) 4-methoxy-1-carboxyamidebenzene-2-thioglycollic acid is obtained by hydrolyzing the corresponding 1-cyano compound by means of the products of the sulphonation of phenol; (2) sulphonated naphthalene is used to prepare 4-ethoxy-1-carboxyamide benzene-2-thioglycollic acid from the corresponding 1-cyano compound.
GB13265/29A1928-04-281929-04-29Manufacture of ortho-arylcarboxyamido-thioglycollic acids
ExpiredGB310757A
(en)