GB287858A - Improvements in or relating to the manufacture of substituted thioglycollic acids - Google Patents

Improvements in or relating to the manufacture of substituted thioglycollic acids

Info

Publication number
GB287858A
GB287858A GB9119/28A GB911928A GB287858A GB 287858 A GB287858 A GB 287858A GB 9119/28 A GB9119/28 A GB 9119/28A GB 911928 A GB911928 A GB 911928A GB 287858 A GB287858 A GB 287858A
Authority
GB
United Kingdom
Prior art keywords
sulphonic acid
chlorbenzene
acids
acid
trichlorbenzene
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
GB9119/28A
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
Publication of GB287858A publication Critical patent/GB287858A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C323/00—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

287,858. I. G. Farbenindustrie Akt.- Ges. March 24, 1927, [Convention date]. Addition to 281,290 and 287,178. Halogenaryl-sulphochlorides, mercaptans, and thioglycollic acids. - Halogen benzene sulphonic acids and their homologues are converted into the corresponding sulphachlorides by treatment with chlorsulphonic acid at temperatures below 100‹ C. On reduction of the sulphochloride mercaptans are produced and by condensing the latter with chloracetic acid halogen thioglycollic acids are obtained. According to examples, 1 : 4- dimethyl-2-chlorbenzene-5-sulphonic acid, 1- methyl-5-chlorbenzene-2-sulphonic acid, 1 :2 :3- trichlorbenzene-5-sulphonic acid and 1 : 2 : 3- trichlorbenzene-4-sulphonic acid are successively converted into the corresponding sulphochlorides, mercaptans and thioglycollic acids. 1 : 4-Dimethyl-2-chlor-5-sulphonic acid is obtained by sulphonating p-xylidine and replacing the amino group by chlorine according to Sandmeyer's process. 1-Methyl-5-chlorbenzene-2-sulphonic acid is obtained by submitting m-toluidine sulphate to the so called baking process and replacing the amino group by chlorine. 1 : 2 : 3-Trichlorbenzene-5-sulphonic acid is obtained from 1 : 3-diamino-2-chlorbenzene-5-sulphonic acid by replacing the amino groups by chlorine.
GB9119/28A 1927-03-24 1928-03-26 Improvements in or relating to the manufacture of substituted thioglycollic acids Expired GB287858A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE287858X 1927-03-24

Publications (1)

Publication Number Publication Date
GB287858A true GB287858A (en) 1929-02-14

Family

ID=6059395

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9119/28A Expired GB287858A (en) 1927-03-24 1928-03-26 Improvements in or relating to the manufacture of substituted thioglycollic acids

Country Status (1)

Country Link
GB (1) GB287858A (en)

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