DE561422C - Process for the preparation of sulfamic acids of secondary aromatic bases - Google Patents

Process for the preparation of sulfamic acids of secondary aromatic bases

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Publication number
DE561422C
DE561422C DEI36621D DEI0036621D DE561422C DE 561422 C DE561422 C DE 561422C DE I36621 D DEI36621 D DE I36621D DE I0036621 D DEI0036621 D DE I0036621D DE 561422 C DE561422 C DE 561422C
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DE
Germany
Prior art keywords
preparation
aromatic bases
sulfamic acids
secondary aromatic
acid
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
DEI36621D
Other languages
German (de)
Inventor
Dr Georg Kraenzlein
Dr Heinrich Greune
Dr Max Thiele
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 DEI36621D priority Critical patent/DE561422C/en
Application granted granted Critical
Publication of DE561422C publication Critical patent/DE561422C/en
Expired legal-status Critical Current

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Description

Verfahren zur Darstellung von Sulfaminsäuren sekundärer aromatischer Basen Gegenstand des Patentes 493 024 ist ein Verfahren zur Darstellung von Sulfaminsäuren sekundärer Basen, das darin besteht, daß man sekundäre Basen, zweckmäßig in indifferenten Lösungsmitteln, in Gegenwart säurebindender Mittel mit Chlorsulfonsäure behandelt, wobei das indifferente Lösungsmittel gleichzeitig basischen Charakter haben kann.Process for the preparation of sulfamic acids of secondary aromatic Bases The subject of patent 493 024 is a process for the preparation of sulfamic acids secondary bases, which consists in the fact that secondary bases, expediently in indifferent Solvents, treated with chlorosulphonic acid in the presence of acid-binding agents, the inert solvent can at the same time have a basic character.

In dem Patent 511 525 ist dann weiterhin gezeigt, daß man bei dem Verfahren des Patentes 493 024 an Stelle der Chlorsulfonsäure auch Schwefelsäureanhydrid verwenden kann.In the patent 511 525 is then also shown that one in the Process of patent 493 024 instead of chlorosulfonic acid also sulfuric anhydride can use.

Es wurde nun gefunden, daß man an Stelle von Chlorsulfonsäure oder Schwefelsäureanhydrid auch Chlorsulfonsäureester oder Pyroschwefelsäure verwenden kann.It has now been found that instead of chlorosulfonic acid or Sulfuric anhydride also use chlorosulfonic acid ester or pyrosulfuric acid can.

Beispiele i. Zu einem Gemisch aus 107 Gewichtsteilen Monomethylanilin und 5oo Gewichtsteilen Dimethylanilin gibt man bei 25 bis 35° unter Rühren portionsweise 175 Gewichtsteile Chlorsulfonsäureäthylester und erwärmt noch einige Zeit auf 35 bis 40°. Danach gibt man das Reaktionsgemisch in überschüssige Natriumcarbonatlösung und bläst mitWasserdampf aus. Die Sulfaminsäure wird darauf aus der Rückstandslösung als Natriumsalz ausgesalzen.Examples i. To a mixture of 107 parts by weight of monomethylaniline and 500 parts by weight of dimethylaniline are added in portions at 25 to 35 ° with stirring 175 parts by weight of ethyl chlorosulfonate and heated to 35 for some time up to 40 °. The reaction mixture is then poured into excess sodium carbonate solution and blows out with steam. The sulfamic acid is then released from the residue solution salted out as sodium salt.

2. 169 Gewichtsteile Diphenylamin werden mit 500 Gewichtsteilen wasserfreiem Pyridin gemischt und dazu bei io bis 15° unter gutem Rühren und Kühlen portionsweise 3oo Gewichtsteile Pyroschwefelsäure gegeben und noch kurze Zeit bei derselben Temperatur verrührt. Nach Eingeben der Mischung in überschüssige Natriumcarbonatlösung wird mit Wasserdampf behandelt und die Sulfaminsäure durch Aussalzen abgeschieden.2. 169 parts by weight of diphenylamine are mixed with 500 parts by weight of anhydrous pyridine and 300 parts by weight of pyrosulfuric acid are added in portions at 10 ° to 15 ° with thorough stirring and cooling and stirred for a short time at the same temperature. After the mixture has been poured into excess sodium carbonate solution, it is treated with steam and the sulfamic acid is separated off by salting out.

Claims (1)

PATENTANSPRUCH; Verfahren zurDarstellungvonSulfaminsäuren sekundärer aromatischer Basen nach Patent 493 024 und 511 525, dadurch gekennzeichnet, daß die Behandlung der sekundären aromatischen Basen hier mit Chlorsulfon.säureester oder Pyroschwefelsäure vorgenommen wird.PATENT CLAIM; Process for the preparation of secondary sulfamic acids aromatic bases according to Patent 493 024 and 511 525, characterized in that the treatment of the secondary aromatic bases here with chlorosulfonic acid esters or pyrosulfuric acid is made.
DEI36621D 1927-09-03 1927-09-03 Process for the preparation of sulfamic acids of secondary aromatic bases Expired DE561422C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI36621D DE561422C (en) 1927-09-03 1927-09-03 Process for the preparation of sulfamic acids of secondary aromatic bases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI36621D DE561422C (en) 1927-09-03 1927-09-03 Process for the preparation of sulfamic acids of secondary aromatic bases

Publications (1)

Publication Number Publication Date
DE561422C true DE561422C (en) 1932-10-14

Family

ID=7189297

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI36621D Expired DE561422C (en) 1927-09-03 1927-09-03 Process for the preparation of sulfamic acids of secondary aromatic bases

Country Status (1)

Country Link
DE (1) DE561422C (en)

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