GB895701A - Process for the manufacture of thiophenemono-sulphochlorides - Google Patents

Process for the manufacture of thiophenemono-sulphochlorides

Info

Publication number
GB895701A
GB895701A GB35894/59A GB3589459A GB895701A GB 895701 A GB895701 A GB 895701A GB 35894/59 A GB35894/59 A GB 35894/59A GB 3589459 A GB3589459 A GB 3589459A GB 895701 A GB895701 A GB 895701A
Authority
GB
United Kingdom
Prior art keywords
thiophene
sulphochlorides
reacted
reacting
prepared
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
GB35894/59A
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst 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 Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Publication of GB895701A publication Critical patent/GB895701A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
    • C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
    • C07D333/04—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
    • C07D333/26—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D333/30—Hetero atoms other than halogen
    • C07D333/34—Sulfur atoms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)

Abstract

Chlorosulphonic acid and phosphorus pentachloride are reacted in a molar ratio of from 2 : 1 to 3 : 1 at - 20 DEG C. to +20 DEG C.; HCl is evolved. The product (not identified) is a mild sulphochlorination agent (see Group IV(b)).ALSO:Thiophene sulphochlorides of formula <FORM:0895701/IV (b)/1> where R is hydrogen, halogen (e.g. chloro, bromo and iodo), or an alkyl group having 1-6 carbon atoms, are prepared by reacting the 2-R-thiophene with a mixture of chlorsulphonic acid and phosphorus pentachloride or with a reaction product of these two compounds. Thus chlorsulphonic acid and PCl5 may be reacted at -20 DEG C. to +20 DEG C., the thiophene added, and the mixture heated at 20 DEG C.-70 DEG C. 2-Chlorothiophene-5-sulphonamide is prepared by reacting the sulphochloride with ammonia.
GB35894/59A 1958-10-22 1959-10-22 Process for the manufacture of thiophenemono-sulphochlorides Expired GB895701A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE895701X 1958-10-22

Publications (1)

Publication Number Publication Date
GB895701A true GB895701A (en) 1962-05-09

Family

ID=6847821

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35894/59A Expired GB895701A (en) 1958-10-22 1959-10-22 Process for the manufacture of thiophenemono-sulphochlorides

Country Status (1)

Country Link
GB (1) GB895701A (en)

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