Präzisierung der Konstitution der Sulfonierungsprodukte von o-Toluidin
Sulfonation of o-toluidine (1) in oleum yields only 2-amino- toluene-4-sulfonic acid (4), while the isomeric 2-aminotoluene- 5-sulfonic acid (2) can be prepared solely by baking the acid sulfate salt of 1. Further sulfonation of 4 afforded 2-amino- toluene-4,5-disulfonic acid (6) whose structure wa...
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| Format: | Article |
| Language: | deu |
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Swiss Chemical Society
1972-06-01
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| Series: | CHIMIA |
| Online Access: | https://www.chimia.ch/chimia/article/view/9014 |
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| author | Alfred Courtin Kurt Brenneisen |
| author_facet | Alfred Courtin Kurt Brenneisen |
| author_sort | Alfred Courtin |
| collection | DOAJ |
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Sulfonation of o-toluidine (1) in oleum yields only 2-amino- toluene-4-sulfonic acid (4), while the isomeric 2-aminotoluene- 5-sulfonic acid (2) can be prepared solely by baking the acid sulfate salt of 1. Further sulfonation of 4 afforded 2-amino- toluene-4,5-disulfonic acid (6) whose structure was proven by deamination to toluene-3,4-disulfonic acid (8). The latter was independently synthesized from 4-aminotoluene-3-sulfonic acid (7) by successive treatment with potassium ethyl xanthate, hydrolysis and oxidation.
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| format | Article |
| id | doaj-art-28d933b00a9548adac3bbd1611c75d05 |
| institution | OA Journals |
| issn | 0009-4293 2673-2424 |
| language | deu |
| publishDate | 1972-06-01 |
| publisher | Swiss Chemical Society |
| record_format | Article |
| series | CHIMIA |
| spelling | doaj-art-28d933b00a9548adac3bbd1611c75d052025-08-20T02:29:54ZdeuSwiss Chemical SocietyCHIMIA0009-42932673-24241972-06-0126610.2533/chimia.1972.307Präzisierung der Konstitution der Sulfonierungsprodukte von o-ToluidinAlfred Courtin0Kurt Brenneisen1Farbstoff-Forschung der Sandoz AG, Basel (Schweiz)Farbstoff-Forschung der Sandoz AG, Basel (Schweiz) Sulfonation of o-toluidine (1) in oleum yields only 2-amino- toluene-4-sulfonic acid (4), while the isomeric 2-aminotoluene- 5-sulfonic acid (2) can be prepared solely by baking the acid sulfate salt of 1. Further sulfonation of 4 afforded 2-amino- toluene-4,5-disulfonic acid (6) whose structure was proven by deamination to toluene-3,4-disulfonic acid (8). The latter was independently synthesized from 4-aminotoluene-3-sulfonic acid (7) by successive treatment with potassium ethyl xanthate, hydrolysis and oxidation. https://www.chimia.ch/chimia/article/view/9014 |
| spellingShingle | Alfred Courtin Kurt Brenneisen Präzisierung der Konstitution der Sulfonierungsprodukte von o-Toluidin CHIMIA |
| title | Präzisierung der Konstitution der Sulfonierungsprodukte von o-Toluidin |
| title_full | Präzisierung der Konstitution der Sulfonierungsprodukte von o-Toluidin |
| title_fullStr | Präzisierung der Konstitution der Sulfonierungsprodukte von o-Toluidin |
| title_full_unstemmed | Präzisierung der Konstitution der Sulfonierungsprodukte von o-Toluidin |
| title_short | Präzisierung der Konstitution der Sulfonierungsprodukte von o-Toluidin |
| title_sort | prazisierung der konstitution der sulfonierungsprodukte von o toluidin |
| url | https://www.chimia.ch/chimia/article/view/9014 |
| work_keys_str_mv | AT alfredcourtin prazisierungderkonstitutiondersulfonierungsproduktevonotoluidin AT kurtbrenneisen prazisierungderkonstitutiondersulfonierungsproduktevonotoluidin |