DE1543558C - Process for the preparation of 1 oxa 3 thiacyclopentan 2 ones - Google Patents
Process for the preparation of 1 oxa 3 thiacyclopentan 2 onesInfo
- Publication number
- DE1543558C DE1543558C DE1543558C DE 1543558 C DE1543558 C DE 1543558C DE 1543558 C DE1543558 C DE 1543558C
- Authority
- DE
- Germany
- Prior art keywords
- oxa
- mol
- cyclopropane
- thia
- cos
- 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
Links
- 238000000034 method Methods 0.000 title claims description 5
- 238000002360 preparation method Methods 0.000 title claims 2
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M Lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 11
- IAYPIBMASNFSPL-UHFFFAOYSA-N oxane Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 10
- JJWKPURADFRFRB-UHFFFAOYSA-N Carbonyl sulfide Chemical compound O=C=S JJWKPURADFRFRB-UHFFFAOYSA-N 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 229910001868 water Inorganic materials 0.000 claims description 9
- 150000004820 halides Chemical class 0.000 claims description 6
- 239000011541 reaction mixture Substances 0.000 claims description 6
- 229910052708 sodium Inorganic materials 0.000 claims description 6
- 239000011734 sodium Substances 0.000 claims description 6
- VOVUARRWDCVURC-UHFFFAOYSA-N Thiirane Chemical compound C1CS1 VOVUARRWDCVURC-UHFFFAOYSA-N 0.000 claims description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 5
- 229910052744 lithium Inorganic materials 0.000 claims description 5
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 claims description 5
- 239000003054 catalyst Substances 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 4
- 238000011065 in-situ storage Methods 0.000 claims description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 4
- 229910052700 potassium Inorganic materials 0.000 claims description 4
- 239000011591 potassium Substances 0.000 claims description 4
- GOOHAUXETOMSMM-UHFFFAOYSA-N propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims description 4
- 150000003568 thioethers Chemical class 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 3
- MBNVSWHUJDDZRH-UHFFFAOYSA-N 2-methylthiirane Chemical compound CC1CS1 MBNVSWHUJDDZRH-UHFFFAOYSA-N 0.000 claims description 2
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- 150000001340 alkali metals Chemical class 0.000 claims description 2
- -1 alkyl sulfonium halide Chemical class 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- WRWHFVRDUAQRIQ-UHFFFAOYSA-L sulfanylidenemethanediolate Chemical compound [O-]C([O-])=S WRWHFVRDUAQRIQ-UHFFFAOYSA-L 0.000 claims description 2
- GNVMUORYQLCPJZ-UHFFFAOYSA-M thiocarbamate Chemical compound NC([S-])=O GNVMUORYQLCPJZ-UHFFFAOYSA-M 0.000 claims description 2
- KMSNYNIWEORQDJ-UHFFFAOYSA-N thiolan-2-one Chemical compound O=C1CCCS1 KMSNYNIWEORQDJ-UHFFFAOYSA-N 0.000 claims description 2
- VFJYIHQDILEQNR-UHFFFAOYSA-M trimethylsulfanium;iodide Chemical compound [I-].C[S+](C)C VFJYIHQDILEQNR-UHFFFAOYSA-M 0.000 claims description 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims 10
- 238000009833 condensation Methods 0.000 claims 5
- 230000005494 condensation Effects 0.000 claims 5
- CPELXLSAUQHCOX-UHFFFAOYSA-M bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 claims 3
- 239000012535 impurity Substances 0.000 claims 3
- XMBWDFGMSWQBCA-UHFFFAOYSA-M iodide Chemical compound [I-] XMBWDFGMSWQBCA-UHFFFAOYSA-M 0.000 claims 3
- BGTOWKSIORTVQH-UHFFFAOYSA-N Cyclopentanone Chemical compound O=C1CCCC1 BGTOWKSIORTVQH-UHFFFAOYSA-N 0.000 claims 2
- JHJLBTNAGRQEKS-UHFFFAOYSA-M Sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 claims 2
- LVZWSLJZHVFIQJ-UHFFFAOYSA-N cyclopropane Chemical compound C1CC1 LVZWSLJZHVFIQJ-UHFFFAOYSA-N 0.000 claims 2
- 239000007788 liquid Substances 0.000 claims 2
- 239000000126 substance Substances 0.000 claims 2
- 239000000725 suspension Substances 0.000 claims 2
- DAJDXKBYZZGECL-UHFFFAOYSA-N 1,3-oxathiolan-2-one Chemical compound O=C1OCCS1 DAJDXKBYZZGECL-UHFFFAOYSA-N 0.000 claims 1
- 235000010751 Asperula odorata Nutrition 0.000 claims 1
- 244000186140 Asperula odorata Species 0.000 claims 1
- INQOMBQAUSQDDS-UHFFFAOYSA-N Methyl iodide Chemical compound IC INQOMBQAUSQDDS-UHFFFAOYSA-N 0.000 claims 1
- 241000713154 Toscana virus Species 0.000 claims 1
- 238000007329 Woodward reaction Methods 0.000 claims 1
- 230000005587 bubbling Effects 0.000 claims 1
- 239000002826 coolant Substances 0.000 claims 1
- 150000001942 cyclopropanes Chemical class 0.000 claims 1
- 238000004880 explosion Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 229910052755 nonmetal Inorganic materials 0.000 claims 1
- 150000002843 nonmetals Chemical class 0.000 claims 1
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims 1
- 239000001294 propane Substances 0.000 claims 1
- 239000000376 reactant Substances 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- 239000011780 sodium chloride Substances 0.000 claims 1
- FVAUCKIRQBBSSJ-UHFFFAOYSA-M sodium iodide Inorganic materials [Na+].[I-] FVAUCKIRQBBSSJ-UHFFFAOYSA-M 0.000 claims 1
- 235000009518 sodium iodide Nutrition 0.000 claims 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 1
- 229910052717 sulfur Inorganic materials 0.000 claims 1
- 239000011593 sulfur Substances 0.000 claims 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 claims 1
- 239000003513 alkali Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 125000004435 hydrogen atoms Chemical group [H]* 0.000 description 2
- XCWPBWWTGHQKDR-UHFFFAOYSA-N 1,3-dithiolane-2-thione Chemical compound S=C1SCCS1 XCWPBWWTGHQKDR-UHFFFAOYSA-N 0.000 description 1
- DGVVWUTYPXICAM-UHFFFAOYSA-N 2-mercaptoethanol Chemical compound OCCS DGVVWUTYPXICAM-UHFFFAOYSA-N 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 150000001649 bromium compounds Chemical class 0.000 description 1
- 150000003841 chloride salts Chemical class 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 125000001475 halogen functional group Chemical group 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 150000004694 iodide salts Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 150000007944 thiolates Chemical class 0.000 description 1
- 125000001834 xanthenyl group Chemical class C1=CC=CC=2OC3=CC=CC=C3C(C12)* 0.000 description 1
Description
1 21 2
l-Oxa-3-thia-cycIopentan-2-one können beispiels- Die Umsetzung wird bei einer Temperatur zwischenl-Oxa-3-thia-cycIopentan-2-one can example- The reaction is carried out at a temperature between
weise durch Umsetzung von Kohlenoxisulfid mit einem 0 und 700C durchgeführt. Im allgemeinen arbeitetcarried out, by reacting carbonyl sulfide with a 0 to 70 0 C. Generally works
Oxa-cyclopropan erhalten werden; jedoch ergibt sich man bei Atmosphärendruck. Es ist jedoch selbstver-Oxa-cyclopropane are obtained; however, one surrenders at atmospheric pressure. However, it is self-evident
bei dieser Umsetzung, selbst wenn sie von Aminen ständlich, daß man auf Grund der großen Flüchtigkeitin this implementation, even if they are of amines, that one due to the great volatility
katalysiert wird, ein Gemisch zahlreicher Verbin- 5 des Kohlenoxisulfids bei erhöhten Reaktionstempera-is catalyzed, a mixture of numerous compounds 5 of the carbon oxysulfide at elevated reaction temperatures
dungen, deren Trennung äußerst schwierig und um- türen unter Druck in einem Autoklav arbeiten muß.It is extremely difficult to separate them and must work under pressure in an autoclave.
ständlich ist. Es wurde auch vorgesehen, 5-Methyl- Es wird angenommen, daß unter diesen Versuchs-is a matter of course. It was also provided that 5-methyl- It is assumed that under these experimental
l-oxa-S-thia-cyclopentan^-on herzustellen, indem bedingungen der angewandte Cokatalysator minde-to produce l-oxa-S-thia-cyclopentan ^ -one by applying the conditions of the cocatalyst
man zwischen 60 und 900C Methyl-oxacyclopropan stens im Ubergangszustand ein Xanthenderivat bildet,one forms between 60 and 90 0 C methyl-oxacyclopropane least in the transition state a xanthene derivative,
mit Kohlenoxisulfid in Gegenwart eines Katalysators io welches selbst als »in situ« hergestellter Cokatalysatorwith carbon oxysulphide in the presence of a catalyst which itself is a cocatalyst produced "in situ"
der allgemeinen Formel R-O — M, in der R ein wirkt.the general formula R-O - M, in which R acts.
Wasserstoffatom, eine niedrigmolekulare Alkylgruppe Die Verfahrensprodukte dienen als Zwischenpro-
oder eine aromatische Gruppe und M ein Alkali- oder dukte zur Herstellung von Episulfiden.
Erdalkalimetall darstellt, umsetzt. Jedoch verbleiben Die folgenden Beispiele erläutern die Erfindung,
trotz des durch die Durchführung dieser neuen Reak- 15 . .
tion erreichten technischen Fortschrittes die Ausbeuten Beispiel 1
an dem Verfahrensprodukt relativ niedrig. . Ein bei 0° C gehaltener Autoklav wurde mit 2,5 Mol
Die Bildung eines l-Oxa-ß-thia-cyclopentan^-ons Oxa-cyclopropan, das zu 0,20 Gewichtsprozent durch
aus den beiden Ausgangsprodukten läßt sich auge- Einleiten von H2S gesättigt war, und mit 1,9 g Lithiummein
in folgender Weise schreiben: 30 chlorid, das 5% Wasser enthielt, beschickt. In denHydrogen atom, a low molecular weight alkyl group The process products serve as an intermediate or an aromatic group and M an alkali or products for the production of episulphides.
Represents alkaline earth metal, converts. However, the following examples illustrate the invention,
despite the 15. .
tion achieved the yields of example 1 due to technical progress
relatively low in the process product. . An autoclave kept at 0 ° C. was charged with 2.5 mol 2 S was saturated, and write 1.9 g of lithium mine in the following way: 30 chloride, which contained 5% water, charged. In the
£ geschlossenen Autoklav wurde nun allmählich etwa£ closed autoclave was now gradually about
\ 1 Mol Kohlenoxisulfid eingeführt, die Rührvorrich-\ 1 mol of carbon oxysulphide introduced, the stirrer
/ \ tung in Bewegung gesetzt und der Autoklav 15 Stun-set in motion and the autoclave 15 hours
R CH CH2-J-COS -> O S den bei Raumtemperatur gehalten.R CH CH 2 -J-COS -> OS kept at room temperature.
\ ·■' ' \ / 35 Es wurden 140 g eines Reaktionsgemisches der fol-\ · ■ '' \ / 35 140 g of a reaction mixture of the following
Il genden Zusammensetzung erhalten:The following composition is obtained:
Q · GewichtsprozentQ · weight percent
,.„..., itti . w lL 1 Oxa-cyclopropan 30,. "..., itti . w lL 1 oxa-cyclopropane 30
wobei R ein Wasserstoffatom oder eine Methylgruppe Thiacyclopropan 4where R is a hydrogen atom or a methyl group thiacyclopropane 4
oder einen niedrigmolekularen Alkyl-, Aryl- oder Cyc- 30 Merkaptoäthanol 4or a low molecular weight alkyl, aryl or cyc- 30 mercaptoethanol 4
loalkylrest bedeutet. Jedoch ist diese Umsetzung auf l-Oxa-3-thia-cyclopentan-2-on '.'.'.'.'. 55means loalkyl radical. However, this conversion is based on l-oxa-3-thia-cyclopentan-2-one '.'. '.'. '. 55
Grund des kompkxen Mechanismus und der relativen l^-Dithia-cyclopentan-^on 3The reason for the complex mechanism and the relative l ^ -Dithia-cyclopentan- ^ one 3
Instabilität des l-Oxa-S-thia-cyclopentan-^ons schwie- weitere verbindungen 3 bis 4Instability of the l-oxa-S-thia-cyclopentan-one difficult other compounds 3 to 4
ng durchzufuhren; am häufigsten erhalt man em Gemisch zahlreicher Verbindungen, das unter anderem 35 Das entspricht einer Ausbeute von 0,73 Mol 1-Oxaein l,3-Dithia-cyclopentan-2-thion und mehr oder 3-thia-cyclopentan-2-on je Mol umgewandeltem Kohweniger polymerisierte Thia-cyclopropane enthält. lenoxisulfid.ng to perform; the most common is a mixture numerous compounds, including 35 that corresponds to a yield of 0.73 mol of 1-oxaein 1,3-Dithia-cyclopentan-2-thione and more or 3-thia-cyclopentan-2-one per mole of converted carbon less contains polymerized thia-cyclopropane. lenoxisulfide.
Es wurde nun gefunden, daß. bei Verwendung von Beispiel2It has now been found that. when using example2
Katalysatoren auf der Grundlage der hydratisiertenCatalysts based on the hydrated
Chloride, Bromide und Jodide der Metalle Lithium, 40 Bei einem entsprechenden Versuch wie im Beispiel 1 Natrium und Kalium, Jn guten Ausbeuten 1-Oxa- wurden vermischt: ,Chlorides, bromides and iodides of the metals lithium, 40 In a corresponding experiment as in Example 1 Sodium and potassium, in good yields 1-oxa- were mixed:,
S-thia-cyclppentan-^one^aus der^Umsetzung· eines 0,25 Mol Kohlenoxisulfid und
Oxacyclopropans nut Kohlenoxisulfid hervorgehen. 15 Mol Methyl-oxa-cyclopropan, welches 0,02 MolS-thia-cyclppentan- ^ one ^ ^ from the implementation of a · 0, 25 moles of carbonyl sulfide and
Oxacyclopropane emerges only from carbon oxysulfide. 15 mol of methyl-oxa-cyclopropane, which is 0.02 mol
Die genannten Alkalihalogenide stellen das Grund- . Kaliumglykolxanthat und 0,02 Mol zu 10«/The alkali halides mentioned represent the basic. Aliumglykolxanthat K and 0.02 mole to 10 "/
element der erfindungsgemaß angewandten Katalysa- 45 " hydratisiertes Lithiumchlorid enthielt. ■element of the catalyst used according to the invention contained 45 "hydrated lithium chloride. ■
toren dar. Darüber hinaus stellte sich heraus, daß die -In addition, it turned out that the -
Anwesenheit von Wasser bei der erfindungsgemäßen Das Gemisch wurde 15 Stunden bei Raumtempera-Presence of water in the inventive The mixture was 15 hours at room temperature
Umsetzung erforderlich ist. Dieses Wasser kann unter tür stehengelassen, worauf ein Gemisch erhalten
anderem in das Reaktionsgemisch durch Verwendung wurde, das außer den Ausgangsverbindungen ·
eines der genannten Alkalihalogenide in hydratisierter 50 0,065 Mol l-Oxa-S-thia-cyclopentan^-on und
Form zugeführt werden. Die optimale Menge an . 0,025 Mol Methyl-thia-cyclopropan '
Wasser, die in dem Reaktionsgemisch vorhanden sein enthielt.Implementation is required. This water can be left to stand under the door, after which a mixture was obtained, among other things, in the reaction mixture by using the, in addition to the starting compounds
one of the alkali halides mentioned in hydrated 50 0.065 mol l-oxa-S-thia-cyclopentan ^ -one and
Form are fed. The optimal amount of. 0.025 mol of methyl-thia-cyclopropane '
Water contained in the reaction mixture.
.darf, liegt zwischen 2 und 12 Gewichtsprozent be- Aus diesem Gemisch wurde durch Vakuumdestilla-.darf, is between 2 and 12 percent by weight loading from this mixture was Vakuumdestilla-
zogen auf das Gewicht des angewandten Alkali- tion das s.Methyl-l-öxa-S-thia-cyclopentan^-on mit added the s.Methyl-1-öxa-S-thia-cyclopentan ^ -one to the weight of the applied alkaline
halogenide. . „ .i ■'■ „ , 55 einer Reinheit von 95% erhalten.halides. . ".I ■ '■ ", 55 obtained with a purity of 95%.
Es hat sich ferner gezeigt, daß die genannten Halo- ...It has also been shown that the halo ...
genide nur in Gegenwart eines Cokatalysators, der aus ; BeispielsI enjoy only in the presence of a cocatalyst which from; Example
einer der folgenden Verbindungen bestehen kann: ! Ein Autoklav von 400 cm* Fassungsvermögen mitone of the following connections can exist:! An autoclave of 400 cm * capacity with
1 cu,„of„i „«,«.„,cf^ff „;« λ/Το-ΐοη+οη »;„ Tt1Jn einem Thermometer, einer Explosionssichutzscheibe1 cu, "of" i ",", ".", Cf ^ ff ";" λ / Το-ΐοη + οη ";" Tt 1 J n a thermometer, a Explosionssichutzscheibe
1. bcnwefelwasserston, ein Merkaptan, ein Γηιο- , , . _ . ' , , r . _o_ , . ... lA äther ' .. v ' 60 und einer Doppelwand wurde auf —7 C abgekühlt1. hydrogen sulfide, a mercaptan, a Γηιο-,,. _. ' ,, r . _ o _,. ... lA ether ' .. v ' 60 and a double wall was cooled to -7 ° C
2. ein gegebenenfalls in situ gebildetes Alkylsulfo- und mit
niumhalogenid, 0,5 Mol Oxa-cyclopropan,2. an optionally formed in situ alkylsulfo- and with
sodium halide, 0.5 mol oxa-cyclopropane,
3. ein Xanthat, ein Thiolat, ein Thiocarbonat, ein 0,5 Mol Kohlenoxisulfid,3. a xanthate, a thiolate, a thiocarbonate, a 0.5 mol carbon oxysulphide,
Thiocarbamat oder ein Sulfid eines Alkalimetalls, 0,45 g 10°/0 Wasser enthaltendem LithiumchloridThiocarbamate or a sulfide of an alkali metal, 0.45 g of 10 ° / 0 water containing lithium chloride
4. ein Alkohol, der ein gutes Lösungsmittel für das 5 und4. an alcohol that is a good solvent for the 5 and
angewandte Alkalihalogenid darstellt, 1 g Trimethylsulfoniumjodidapplied alkali halide represents 1 g of trimethylsulfonium iodide
ihre volle Wirksamkeit entfalten. beschickt.develop their full effectiveness. loaded.
Claims (4)
Family
ID=
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2540210C3 (en) | Process for the preparation of organotin trihalides | |
EP0051202B1 (en) | Process for preparing 2,3-dichloro-sulfonyl acrylonitriles | |
DE1300118B (en) | Process for the preparation of 1-oxa-3-thia-cycloalkan-2-ones | |
DE2132761A1 (en) | 2-AEthynylcyclopropane compounds and process for making the same | |
DE1618151A1 (en) | Aromatic N, N-disubstituted thione carbamates and thiol carbamates and methods for converting these thione carbamates to the thiol carbamates | |
DE1543558C (en) | Process for the preparation of 1 oxa 3 thiacyclopentan 2 ones | |
DE2001818C3 (en) | Process for the preparation of 4,4'-dithiobis- (2,6-di-t-butylphenol) | |
DE1543558B1 (en) | Process for the preparation of 1-oxa-3-thiacyclopentan-2-ones | |
EP0339394B1 (en) | Process for the preparation of disulfides | |
DE1768202B2 (en) | Process for the production of aromatic sulphides | |
DE1543560C (en) | Process for the preparation of 1-oxa-3-thia-cyclopentane-2-thiones | |
DE4439003C1 (en) | Grignard reagents comprising benzyl-magnesium halide | |
DE2509262C3 (en) | Process for producing a 5-alkylidene-2-norbornene by isomerizing a 5-alkenyl-2-norbornene | |
DE2007737B2 (en) | Process for the production of monoalkyl ethers of catechol, resorcinol or hydroquinone | |
DE2513805C3 (en) | Process for the production of aliphatic sulphides and di-sulphides | |
CH624668A5 (en) | ||
DE946710C (en) | Process for the preparation of N-disubstituted sulfamic acid chlorides | |
DE2915800C2 (en) | Process for the preparation of perfluoroalkanesulfonyl chlorides | |
DE1906767C3 (en) | Process for the production of fire extinguishing agents | |
AT226210B (en) | Process for the preparation of thioethers | |
DE2506917B2 (en) | Process for the preparation of an alkyl tin chloride | |
DE1543559C (en) | Process for the preparation of thia cyclopropane | |
DE1793406C3 (en) | Process for the preparation of sulfonium sulfitobetaines | |
DE1568329C (en) | (1 Nitro I halogen alk> l) organodisulphides and processes for their production | |
DE2755187A1 (en) | CATALYST, PROCESS FOR ITS MANUFACTURING AND ITS USE FOR THE MANUFACTURING OF PERCHLOROMETHYL MERCAPTANE |