CH156308A - Process for the preparation of a sulfuric acid ester. - Google Patents
Process for the preparation of a sulfuric acid ester.Info
- Publication number
- CH156308A CH156308A CH156308DA CH156308A CH 156308 A CH156308 A CH 156308A CH 156308D A CH156308D A CH 156308DA CH 156308 A CH156308 A CH 156308A
- Authority
- CH
- Switzerland
- Prior art keywords
- sulfuric acid
- acid ester
- preparation
- forms
- parts
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C305/00—Esters of sulfuric acids
Description
Verfahren zur Herstellung eines Scliwefelsäureesters. Es wurde gefunden, dass man einen als Hilfsstoff für die Textilindustrie wertvollen Schwefelsäureester erhält, wenn man Olein- alkohol mit den Additionsprodukten, welche Schwefeltrioxyd mit organischen Basen bildet, behandelt.
Der so hergestellte Schwefelsäureester bildet eine gelblich weisse Masse, die in Wasser unter Bildung einer stark schäumen den Lösung leicht löslich ist.
Beispiel: Zu 100 Teilen wasserfreiem Pyridin lässt man unter Rühren bei 0-10 30 Teile Chlorsulfonsäure (120-1250o der Theorie) zutropfen. Die erhaltene Pyridinsulfotrioxyd- suspension versetzt man mit einer Lösung, bestehend aus 54 Teilen Oleinalkohol und 170 Teilen wasserfreiem Pyridin. Es findet dabei Temperatursteigerung bis auf etwa 30 0 statt. Bei<B>26-30'</B> tritt vorübergehender gallertartiger Zustand der Reaktionsflüssig- keit ein, welcher bei etwas höherer Tempe ratur wieder verschwindet.
Man heizt weiter auf 40 o und hält noch während 2 Stunden bei 40-45o. Nach dieser Zeit wird das Reak- tionsgemisch abgekühlt, kalt mit verdünnter Natriumhydroxydlösung neutralisiert (bis ge rade Phenolphthaleinalkalinität eintritt), im Vakuum bei mässiger Temperatur (50-60o) vom Pyridin befreit, der zurückgebliebene Salzrückstand mit absolutem Alkohol er schöpfend extrahiert und die alkoholische Lösung des Schwefelsäureesters auf kleines Volum eingeengt. Beim Erkalten dieser Lö sung kristallisiert das Oleinsulfonat aus; es wird abgesaugt und getrocknet.
Process for the preparation of a sulfuric acid ester. It has been found that a sulfuric acid ester valuable as an auxiliary for the textile industry is obtained if oleic alcohol is treated with the addition products which sulfur trioxide forms with organic bases.
The sulfuric acid ester produced in this way forms a yellowish white mass which is easily soluble in water with the formation of a strongly foaming solution.
Example: 30 parts of chlorosulfonic acid (120-1250 ° of theory) are added dropwise to 100 parts of anhydrous pyridine while stirring at 0-10. The pyridine sulfotrioxide suspension obtained is mixed with a solution consisting of 54 parts of oleic alcohol and 170 parts of anhydrous pyridine. The temperature increases up to about 30 °. At <B> 26-30 '</B> a temporary gelatinous state of the reaction liquid occurs, which disappears again at a slightly higher temperature.
The heating is continued to 40 ° and held at 40-45 ° for 2 hours. After this time the reaction mixture is cooled, neutralized cold with dilute sodium hydroxide solution (until phenolphthalein alkalinity occurs), freed from pyridine in vacuo at a moderate temperature (50-60o), the remaining salt residue is extracted exhaustively with absolute alcohol and the alcoholic solution the sulfuric acid ester concentrated to a small volume. When this solution cools, the oleinsulfonate crystallizes out; it is suctioned off and dried.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH156308T | 1931-05-29 | ||
CH149091T | 1931-05-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH156308A true CH156308A (en) | 1932-07-31 |
Family
ID=25715337
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH156308D CH156308A (en) | 1931-05-29 | 1931-05-29 | Process for the preparation of a sulfuric acid ester. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH156308A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2689244A (en) * | 1950-06-23 | 1954-09-14 | Phillips Petroleum Co | Process for production of chitin sulfate |
-
1931
- 1931-05-29 CH CH156308D patent/CH156308A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2689244A (en) * | 1950-06-23 | 1954-09-14 | Phillips Petroleum Co | Process for production of chitin sulfate |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH156308A (en) | Process for the preparation of a sulfuric acid ester. | |
CH156307A (en) | Process for the preparation of a sulfuric acid ester. | |
DE473218C (en) | Process for the preparation of 2-oxynaphthalene-3-monosulfo-6-carboxylic acid | |
CH173283A (en) | Process for the preparation of a sulfuric acid ester. | |
CH146540A (en) | Process for the production of a new sulphonation product. | |
CH180581A (en) | Process for the preparation of a new sulfonic acid. | |
CH235563A (en) | Process for the preparation of a new diacyl derivative. | |
CH211798A (en) | Process for the preparation of a higher molecular weight α-substituted benzylamine sulfonic acid. | |
CH163005A (en) | Process for the preparation of a new sulfonic acid. | |
CH218521A (en) | Process for the preparation of a diphenyl sulfone derivative. | |
CH243781A (en) | Process for the preparation of a new benzimidazole derivative. | |
CH212062A (en) | Process for the preparation of a derivative of 2-aminopyridine. | |
CH164730A (en) | Process for the preparation of a new sulfonic acid. | |
CH244769A (en) | Process for the preparation of a sulfuric acid ester. | |
CH210755A (en) | Process for preparing a sulfonic acid amide compound. | |
CH364781A (en) | Process for the preparation of new alkylsulphonic acid and oxy-alkylsulphonic acid salts of 3-piperidino-1,1-diphenyl-propanol | |
CH151554A (en) | Process for the production of a new condensation product suitable for the production of plastic masses. | |
CH172361A (en) | Process for the preparation of 4-chloro-2-aminophenylmethylsulfone. | |
CH217229A (en) | Process for the preparation of 2-methyl-3-carbäthoxyamino-4-phenoxymethyl-5-cyano-6-chloropyridine. | |
CH181156A (en) | Process for the production of a new textile auxiliary. | |
CH184529A (en) | Process for the preparation of an acylated mixture of the isomers of the dihydrofollicle hormone. | |
CH240104A (en) | Process for the preparation of a new base. | |
CH169353A (en) | Process for the preparation of a sulfuric acid ester. | |
CH178944A (en) | Process for the preparation of 2-oxydiphenyl ether-5-carboxylic acid. | |
CH310645A (en) | Process for the preparation of a new low-melting steroid hormone ester. |