DE283306C - - Google Patents
Info
- Publication number
- DE283306C DE283306C DENDAT283306D DE283306DA DE283306C DE 283306 C DE283306 C DE 283306C DE NDAT283306 D DENDAT283306 D DE NDAT283306D DE 283306D A DE283306D A DE 283306DA DE 283306 C DE283306 C DE 283306C
- Authority
- DE
- Germany
- Prior art keywords
- sulfonic acid
- xylenol
- acid
- sulfonic
- dimethyl
- 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.)
- Active
Links
- KUFFULVDNCHOFZ-UHFFFAOYSA-N 2,4-Dimethylphenol Chemical compound CC1=CC=C(O)C(C)=C1 KUFFULVDNCHOFZ-UHFFFAOYSA-N 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 3
- RBTARNINKXHZNM-UHFFFAOYSA-K Iron(III) chloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims 5
- QWBBPBRQALCEIZ-UHFFFAOYSA-N 2,3-Dimethylphenol Chemical compound CC1=CC=CC(O)=C1C QWBBPBRQALCEIZ-UHFFFAOYSA-N 0.000 claims 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims 2
- 238000002844 melting Methods 0.000 claims 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N sulfonic acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims 2
- XTHPWXDJESJLNJ-UHFFFAOYSA-N sulfurochloridic acid Chemical compound OS(Cl)(=O)=O XTHPWXDJESJLNJ-UHFFFAOYSA-N 0.000 claims 2
- 235000012970 cakes Nutrition 0.000 claims 1
- 239000007789 gas Substances 0.000 claims 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- FWFGVMYFCODZRD-UHFFFAOYSA-N oxidanium;hydrogen sulfate Chemical compound O.OS(O)(=O)=O FWFGVMYFCODZRD-UHFFFAOYSA-N 0.000 claims 1
- 239000006188 syrup Substances 0.000 claims 1
- 235000020357 syrup Nutrition 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 5
- IWDCLRJOBJJRNH-UHFFFAOYSA-N P-Cresol Chemical compound CC1=CC=C(O)C=C1 IWDCLRJOBJJRNH-UHFFFAOYSA-N 0.000 description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- RLSSMJSEOOYNOY-UHFFFAOYSA-N M-Cresol Chemical compound CC1=CC=CC(O)=C1 RLSSMJSEOOYNOY-UHFFFAOYSA-N 0.000 description 2
- QWVGKYWNOKOFNN-UHFFFAOYSA-N O-Cresol Chemical compound CC1=CC=CC=C1O QWVGKYWNOKOFNN-UHFFFAOYSA-N 0.000 description 2
- NMCUIPGRVMDVDB-UHFFFAOYSA-L Iron(II) chloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 150000001896 cresols Chemical class 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C309/00—Sulfonic acids; Halides, esters, or anhydrides thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
- JVi 283306 -KLASSE \2q. GRUPPE - JVi 283306 - CLASS \ 2q. GROUP
Dr. F. RASCHIG in LUDWIGSHAFEN a. Rh.Dr. F. RASCHIG in LUDWIGSHAFEN a. Rh.
Patentiert im Deutschen Reiche vom 4. Februar 1914 ab.Patented in the German Empire on February 4, 1914.
Aus Untersuchungen von K ekule (Berichte 2 [1869], S. 330) ist bekannt, daß beim Sulfieren des Phenols ein Gemisch von 0- und p-Sulfosäure entsteht, die nur auf umständlichem Wege voneinander zu trennen sind. Erwärmt man das Gemisch längere Zeit, so geht die o-Sulfosäure glatt in die p-Verbindung über. Es macht daher keine Schwierigkeiten, letztere rein zu gewinnen; dagegen ist die reine Phenol-o-sulfosäure nur unter umständlicher Trennung des.Gemenges mit p-Sulfosäure entweder nach der Vorschrift von Kekule oder nach Obermiller (Patentschrift 202168, Kl. 12q) zu erhalten.From studies by K ekule (Reports 2 [1869], p. 330) it is known that during sulphonation of the phenol a mixture of 0- and p-sulfonic acid is formed, which is only cumbersome Ways are to be separated from each other. If you heat the mixture for a long time, it works o-sulfonic acid smoothly over into the p-compound. There is therefore no problem with the latter to win pure; on the other hand, the pure phenol-o-sulfonic acid is only with cumbersome separation of des.Gemenges with p-sulfonic acid either according to Kekule or Obermiller (patent specification 202168, class 12q) to obtain.
Das o-Kresol verhält sich beim Sulfieren gerade so wie Phenol, nur daß hier noch weniger eine o-Sulfosäure (also eine Säure, bei der die Sulfogruppe sich zum Hydroxyl in o-Stellung befindet) gebildet wird, und daß diese noch leichter in p-Sulfosäure übergeht. Beim m-Kresol entsteht ein Gemisch von ungefähr gleichen Teilen o- und p-Sulf osäure; nur das p-Kresol liefert ausschließlich eine o-Sulfosäure, weil hier die p-Stelluhg zu der Hydroxylgruppe durch die Methylgruppe be-. setzt ist.When sulfonating, the o-cresol behaves just like phenol, only here even less an o-sulfonic acid (i.e. an acid in which the sulfo group becomes the hydroxyl in o-position) is formed, and that this converts even more easily into p-sulfonic acid. In the case of m-cresol, a mixture of approximately equal parts of o- and p-sulfonic acid is formed; only the p-cresol delivers exclusively an o-sulfonic acid, because here the p-position to the Hydroxyl group through the methyl group. is set.
Eine leicht zugängliche o-Sulfosäure des Phenols oder seiner Homologen, bei der die für weitere Verarbeitung wichtige p-Stellung zum Hydroxyl unbesetzt wäre, ist also noch nicht bekannt; und es war auch nicht zu erwarten, daß man eine solche aus irgendeinem Homologen des Phenols durch einfache SuI-fierung erhalten würde, vielmehr mußte man vermuten, daß alle derartigen Homologen, falls nur die p-Stellung zum Hydroxyl unbesetzt ist, ganz oder wenigstens zum großen Teil in dieser Stellung sulfiert würden.An easily accessible o-sulfonic acid of phenol or its homologues, in which the The p-position to the hydroxyl, which is important for further processing, would therefore still be unoccupied not known; nor was it to be expected that one would get such a thing out of any Homologues of the phenol would be obtained by simple suI-fation, rather one had to suspect that all such homologues, if only the p-position to the hydroxyl, are unoccupied is, would be completely or at least largely sulfated in this position.
Dem entgegen wurde aber gefunden, daß ι · 3 - Dimethyl - 5 - oxybenzol (symmetrisches m-Xylenol), dessen Herstellung in der Patentschrift 254716, Kl. 12 q beschrieben ist, beim Behandeln mit Schwefelsäure oder anderen sulfierend wirkenden Mitteln ausschließlich eine o-Sulfosäure der Konstitution:Contrary to this, however, it was found that 3-dimethyl-5-oxybenzene (symmetrical m-xylenol), the preparation of which is described in patent specification 254716, cl. 12 q, at Treat with sulfuric acid or other sulphurizing agents only one o-sulfonic acid of the constitution:
CH3 ,CH 3 ,
SO3HSO 3 H
liefert, die nun, da sie die p-Stellung zum Hydroxyl unbesetzt enthält, eine außerordentliche Reaktionsfähigkeit zeigt und daher vielseitiger chemischer Anwendung fähig ist.which now, since it contains the p-position to the hydroxyl unoccupied, an extraordinary one Shows reactivity and is therefore capable of versatile chemical applications.
Der Nachweis, daß hier wirklich eine o-Sulfosäure vorliegt, wurde nach den Angaben von Obermiller (Berichte 40 [1907], S. 3632) durch die Eisenchloridreaktion geführt. Es wurde zunächst festgestellt, daß Obermillers Behauptung, die Phenol-o-sulfosäure werde durch Eisenchlorid etwa achtmal so stark violett gefärbt wie eine gleiche Menge p-Sulfosäure, richtig ist. Es wurde sodann gefunden, daß etwa die gleiche Stärke der Färbung wie bei der Phenol-o-sulfosäure, auch bei den o-Sulfosäuren des o-, m- und des p-Kresols auftritt, während die p-Sulfosäuren der beiden ersten Kresole ähnlich schwache Färbungen zeigenThe evidence that an o-sulfonic acid is really present here was based on the information von Obermiller (Reports 40 [1907], p. 3632) through the iron chloride reaction. It it was first established that Obermiller's assertion that the phenol-o-sulfonic acid became Colored violet by ferric chloride about eight times as much as an equal amount of p-sulfonic acid, correct is. It was then found to be about the same strength of coloration as in phenol-o-sulfonic acid, also occurs with the o-sulfonic acids of o-, m- and p-cresol, while the p-sulfonic acids of the first two cresols show similarly weak colors
Claims (1)
Publications (1)
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DE283306C true DE283306C (en) |
Family
ID=538882
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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Country Status (1)
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DE (1) | DE283306C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7508966B2 (en) | 2002-10-11 | 2009-03-24 | University Of Massachusetts | Optical fourier systems and methods for medical image processing |
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0
- DE DENDAT283306D patent/DE283306C/de active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7508966B2 (en) | 2002-10-11 | 2009-03-24 | University Of Massachusetts | Optical fourier systems and methods for medical image processing |
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