DE899202C - Process for the preparation of 5-thione-1,2-dithiols - Google Patents

Process for the preparation of 5-thione-1,2-dithiols

Info

Publication number
DE899202C
DE899202C DEB18773D DEB0018773D DE899202C DE 899202 C DE899202 C DE 899202C DE B18773 D DEB18773 D DE B18773D DE B0018773 D DEB0018773 D DE B0018773D DE 899202 C DE899202 C DE 899202C
Authority
DE
Germany
Prior art keywords
dithiols
thione
preparation
oxo
sulfur
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
DEB18773D
Other languages
German (de)
Inventor
Dr Bruno Boettcher
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.)
BRUNO BOETTCHER DR
Original Assignee
BRUNO BOETTCHER DR
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 BRUNO BOETTCHER DR filed Critical BRUNO BOETTCHER DR
Priority to DEB18773D priority Critical patent/DE899202C/en
Application granted granted Critical
Publication of DE899202C publication Critical patent/DE899202C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D339/00Heterocyclic compounds containing rings having two sulfur atoms as the only ring hetero atoms
    • C07D339/02Five-membered rings
    • C07D339/04Five-membered rings having the hetero atoms in positions 1 and 2, e.g. lipoic acid

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Herstellung von 5-Thion-1, 2-dithiolen Es ist bereits vorgeschlagen worden, 5-Thion- 1, 2-dithiole aus 5-Oxo-r, 2-dithiolen, für sich allein oder in, organischen Lösungsmitteln geilös.t, durch Einwirkung von Pho,sphompentasulfid: in der Hitze herzustellen. Dieses Verfahren, setzt das. Vorhandensein, der 5-Oxo-r, 2-@dithio,le voraus. Es ist bekannt, d@aß diese Verbindungen aus ungesättigten Säureestern, z. B. Zimtsäureäthyleister, durch Einwirkung von Schwefel entstehen. Es wurde nun gefunden, daß man direkt aus un- gesättiigten Estern, z. B. Ziimts.äure:äthylester, unter Umgehung der Reindarstellung der 5-Oxo-i, 2@di- thio,le zu den. 5-Thion-r, 2-dithiolen. gelangen; kann, wenn män auf die urigesättigten Säureeister ent- weder bei Abwesenheit eines organischen Lösungs- mittels otder in einem organischen Lösungsmdtteil gelöst Schwefel und Phospho@rpenta,sulfi@d gleich- zeitig einwirken läßt. Beispiel 25,o g Zimtisäureäthyles@ter werden mit einem Gemisch von 12,5 g Schwefel und 15,o g fein:st- gepulvertean P2 S5 im Luftbade erhitzt. Die bei etwa ras bis 13o° einsetzende stürmische Reaktion (unter H2 S Abspaltung) wird nach etwa r Stunde beendet. Aus dem Reiaktion,sprodukt, das z. B. in B,e@nzod aufgenommen wird, kann über das Hg-Salz nach bekannten Methoden das 5-Thion-3-phenyl- i, 2-dithiol gewonnen werden. F. i26°.Process for the preparation of 5-thione-1,2-dithiols It has already been suggested that 5-thione 1, 2-dithiols from 5-oxo-r, 2-dithiols, for themselves alone or in, organic solvents geilös.t, by the action of pho, sphompentasulfide: in the To produce heat. This procedure, presupposes that. Presence, that 5-Oxo-r, 2- @ dithio, le ahead. It is known that these compounds from unsaturated acid esters, z. B. Zimtsäureäthyleister, by the action of Sulfur is produced. It has now been found that one can directly from un- saturated esters, e.g. B. cinnamic acid: ethyl ester, under Bypassing the pure representation of the 5-oxo-i, 2 @ di- thio, le to the. 5-thione-r, 2-dithiols. reach; can, if you have to rely on the unsaturated acidic spirits neither in the absence of an organic solution by means of otder in an organic solvent part dissolved sulfur and Phospho @ rpenta, sulfi @ d the same lets act early. example 25, above cinnamic acid ethers are mixed with a Mixture of 12.5 g sulfur and 15, og fine: st- powder-coated P2 S5 heated in an air bath. The at Stormy reaction starting about ras to 130 ° (with splitting off of H2 S) after about r hour completed. From the reaction, product that z. Am B, e @ nzod can be added via the Hg salt according to known methods the 5-thione-3-phenyl- i, 2-dithiol be won. F. i26 °.

Claims (1)

.PATENTANSPRUCH: Verfahren zur Herstellung von 5-Thioni, 2-dithio@len, dadurch gekennzeichnet, daB auf Ester ungesättigter Carbonsäuren gleichzeitig Schwefel und Phosphorpentasulfid zur Einwirkung gebracht werden..PATENT CLAIM: Process for the production of 5-thioni, 2-dithio @ len, characterized in that the esters of unsaturated carboxylic acids also contain sulfur and phosphorus pentasulfide.
DEB18773D 1944-08-22 1944-08-22 Process for the preparation of 5-thione-1,2-dithiols Expired DE899202C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB18773D DE899202C (en) 1944-08-22 1944-08-22 Process for the preparation of 5-thione-1,2-dithiols

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB18773D DE899202C (en) 1944-08-22 1944-08-22 Process for the preparation of 5-thione-1,2-dithiols

Publications (1)

Publication Number Publication Date
DE899202C true DE899202C (en) 1953-12-10

Family

ID=6959854

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB18773D Expired DE899202C (en) 1944-08-22 1944-08-22 Process for the preparation of 5-thione-1,2-dithiols

Country Status (1)

Country Link
DE (1) DE899202C (en)

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