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GB320641A - Process for the manufacture of derivatives of carbazole - Google Patents

Process for the manufacture of derivatives of carbazole

Info

Publication number
GB320641A
GB320641A GB1454928A GB1454928A GB320641A GB 320641 A GB320641 A GB 320641A GB 1454928 A GB1454928 A GB 1454928A GB 1454928 A GB1454928 A GB 1454928A GB 320641 A GB320641 A GB 320641A
Authority
GB
United Kingdom
Prior art keywords
acid
sulphonic groups
carbazol
amino group
trisulphonic
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
GB1454928A
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 GB1454928A priority Critical patent/GB320641A/en
Publication of GB320641A publication Critical patent/GB320641A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D209/56—Ring systems containing three or more rings
    • C07D209/80—[b, c]- or [b, d]-condensed
    • C07D209/82—Carbazoles; Hydrogenated carbazoles
    • C07D209/88—Carbazoles; Hydrogenated carbazoles 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 carbon atoms of the ring system

Landscapes

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

Abstract

320,641. Carpmael, A., (I. G. Farbenindustrie Akt.-Ges.). May 17, 1928. Samples furnished. 1-Amino-and-substituted amino-carbazols are obtained by mononitrating a carbazolsulphonic acid having at least one free 1- or 8- position, reducing the resulting 1- or 8-nitrocarbazolsulphonic acid, and splitting off the sulphonic groups by heating under pressure, if desired after replacing the amino group by a substituted amino group by normal reactions. Acid may be added to facilitate removal of the sulphonic groups. According to an example, carbazol-3 : 6 : 8-trisulphonic acid, prepared by sulphonating carbazol with oleum at 100‹ C., is mononitrated and the product reduced with iron and acetic acid to give 1-aminocarbazol- 3: 6 : 8-trisulphonic acid, which is then heated with dilute sulphuric acid in an autoclave to remove all three sulphonic groups.
GB1454928A 1928-05-17 1928-05-17 Process for the manufacture of derivatives of carbazole Expired GB320641A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1454928A GB320641A (en) 1928-05-17 1928-05-17 Process for the manufacture of derivatives of carbazole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1454928A GB320641A (en) 1928-05-17 1928-05-17 Process for the manufacture of derivatives of carbazole

Publications (1)

Publication Number Publication Date
GB320641A true GB320641A (en) 1929-10-17

Family

ID=10043229

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1454928A Expired GB320641A (en) 1928-05-17 1928-05-17 Process for the manufacture of derivatives of carbazole

Country Status (1)

Country Link
GB (1) GB320641A (en)

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