DE927506C - Process for the production of oximes by reducing alicyclic nitroparaffins - Google Patents
Process for the production of oximes by reducing alicyclic nitroparaffinsInfo
- Publication number
- DE927506C DE927506C DEN3687A DEN0003687A DE927506C DE 927506 C DE927506 C DE 927506C DE N3687 A DEN3687 A DE N3687A DE N0003687 A DEN0003687 A DE N0003687A DE 927506 C DE927506 C DE 927506C
- Authority
- DE
- Germany
- Prior art keywords
- oximes
- nitroparaffins
- sulfide
- alicyclic
- reducing
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C249/00—Preparation of compounds containing nitrogen atoms doubly-bound to a carbon skeleton
- C07C249/04—Preparation of compounds containing nitrogen atoms doubly-bound to a carbon skeleton of oximes
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C249/00—Preparation of compounds containing nitrogen atoms doubly-bound to a carbon skeleton
- C07C249/04—Preparation of compounds containing nitrogen atoms doubly-bound to a carbon skeleton of oximes
- C07C249/08—Preparation of compounds containing nitrogen atoms doubly-bound to a carbon skeleton of oximes by reaction of hydroxylamines with carbonyl compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2601/00—Systems containing only non-condensed rings
- C07C2601/12—Systems containing only non-condensed rings with a six-membered ring
- C07C2601/14—The ring being saturated
Description
Verfahren zur Herstellung von Oximen durch Reduktion alicyclischer Nitroparaffine -Die Erfindung betrifft ein Verfahren zur Herstellung von Oximen durch partielle Reduktion der entsprechenden cyclisohen Nitroparaffine.Process for the preparation of oximes by the reduction of alicyclic Nitroparaffins - The invention relates to a process for the preparation of oximes by partial reduction of the corresponding cyclisohen nitroparaffins.
Es sind viele Verfahren zur Reduktion von Nitroverbindungen bekannt, bei denen Amine erhalten werden. Will man aber Oxime aus Nitroverbindungen herstellen, so soll der Reduktionsvorgang derart ve-r?l.aufen, d,aß das als ein partiell reduziertes Produkt gebildete Oxim unter .den angewandten Reaktionsbedingungen nicht weiter reduziert wird. Dies kann zum Teil dadurch erreicht werden, daß die Reduktion der Natriumverbindung des Nitroparaffins mit Zinn oder Zink in saurem Medium, vorzugsweise in Salzsäure, durchgeführt wird. Auf diese Weise werden jedoch nur geringe Ausbeuten an Oxim, etwa q.o b-is 5o Gewichtsprozent, bezogen auf die Nitroverbindung, erhalten. Als Nebenprodukte entstehen dabei Amine und Ketone.There are many known methods for reducing nitro compounds, in which amines are obtained. But if one wants to produce oximes from nitro compounds, so the reduction process is supposed to run in such a way that it is a partially reduced one Product formed oxime under. The applied reaction conditions no further is reduced. This can be achieved in part by reducing the Sodium compound of nitroparaffin with tin or zinc in an acidic medium, preferably in hydrochloric acid. In this way, however, only low yields are achieved of oxime, about q.o b-is 50 percent by weight, based on the nitro compound. Amines and ketones are formed as by-products.
Auch die Herstellung von Oximen durch Reduktion der Natriumsalze von Nitroparaffinen mit Hydroxylaminverbindungen ist bekannt. . Diese Methode hat den Nachteil:, daß die Reduktion bei niedriger Temperatur, unterhalb 5°, :durchgeführt werden ruß, so daß eine starke Kühlung erforderlich ist. Außerdem ruß ein kostspieliges Reduktionsmittel angewandt werden.Also the production of oximes by reducing the sodium salts of Nitroparaffins with hydroxylamine compounds are known. . These method has the disadvantage that the reduction is carried out at a low temperature, below 5 ° become soot, so that strong cooling is required. In addition, an expensive soot Reducing agents are applied.
Aus Honben-Weyl: »Methoden der arganischen Chemie«, Bd. 2, S. 332 unten, und den dieser Stelle entsprechenden Berichten der deutschen chemischen Gesellischaft, Bd. 35, 1902, S. 1084 bis 1093, ist es ferner bekannt, daß man allgemein Nitroalidehydhydr.azone mit Sulfiden zu den entsprechenden Oximen reduzieren kann. An dieser Reaktion nimmt die Phenylhydrazonigrup:pe teil. Die Reduktion der Nitrogruppe wird also durch die Anwesenheit der Doppelhinduing und der beiden Stickstoffatome der Hydrazongruppe beeinflußt. Für die Reduktion von igesättigten cyclisichen Nitroparaffinen läßt sich daraus keine Arheitsregel .ableiten, zumal die nicht cyclischen :gesättigten aldphatis chen wie Nitromethan,, Nitroäthan, sich nach dem in der vorliegenden Erfindung beschriebenen Verfahren nicht zu Oximen reduzieren laseen.From Honben-Weyl: "Methods of Arganic Chemistry", Vol. 2, p. 332 below, and the reports of the German chemical society corresponding to this point, Vol. 35, 1902, pp. 1084 to 1093, it is also known that one generally uses Nitroalidehydhydr.azone with sulfides can reduce to the corresponding oximes. Takes part in this reaction the phenylhydrazone group: pe part. The reduction of the nitro group is thus achieved by the Presence of the double hindering and the two nitrogen atoms of the hydrazone group influenced. For the reduction of unsaturated cyclic nitroparaffins No rule of law can be derived from this, especially since the non-cyclic: saturated ones aldphatis chen such as nitromethane ,, nitroethane, according to the in the present invention Do not allow the procedure described to reduce oximes.
Aus :dem Patent 825 544 ist auch bekannt, Salze von primären oder sekundären Nitroverbindungen der-aliphatisichen oder cydlo.aliphati:s,chen Reihe mit Schwefelwasiserstoff in saurer Lösung, vorzugsweise bei einem pH-Wert von 2 bis 4, zu Oximen zu reduzieren.From: the patent 825 544 is also known salts of primary or secondary nitro compounds of the aliphatic or cydlo.aliphati: s, chen series with hydrogen sulfide in acidic solution, preferably at a pH of 2 to 4, to reduce oximes.
Ferner ist es bereits iseit langem bekannt, d@aß als Reduktionsmittel zur Herstellung von Aminen aus den entsprechenden aromati.sdien Ni@troveTbindungen lbsiliche Sulfide verwendet werden können.Furthermore, it has long been known that d @ aß as a reducing agent for the production of amines from the corresponding aromatic Ni @ troveT bonds lbsilicate sulfides can be used.
Es wurde nun festgestellt, daß die Iletztgenannten Reduktionsmittel zurr Reduktion von cyclischen Nitroparaffinen verwendet werden können, wobei überraschenderweise anstatt Aminen hohe Aue:-beuten an Oximen erhalten werden.It has now been found that the last-mentioned reducing agents can be used for the reduction of cyclic nitroparaffins, surprisingly instead of amines, high yields of oximes are obtained.
Es wurde :gefunden, .daß die Herstellung eines Oxims aus dem entsprechenden alicycliischen Nitroparaffin zu günstigen Ergebnissen führt, wenn das Nitroparaffin mit Hilfe eiirres in einem neutralen Lösungsmittel. gellösten Sulfids: reduziert wird.It was found that the production of an oxime from the corresponding alicyclic nitroparaffin gives favorable results if the nitroparaffin with the help of an iron in a neutral solvent. gel-dissolved sulphide: reduced will.
Die Reduil<tionsimittel, die gemäß :der vorliegenden Erfindung verwendet werden, sind lösliche Sülfi.de, wie die neutr.atlen oder sauren Sulfide der Alkali- und Exdalkallimetalle und :dies; Ammonium@s.. Auch die Polysulfide dieser Metalle oder des. Ammoniums: können angewandt werden.The reducing agents according to: the present invention are used are soluble Sülfi.de, such as the neutral or acidic sulphides of the alkali and alkali metals and: this; Ammonium @ s .. Also the polysulfides of these Metals or des. Ammonium: can be used.
Als neutrale Lösungsmittel für die Sulfide verwendet man Wasser, vorzugsweise
aber Alkohole, wie Äthylalkohoil, P@ropyitalkoihol oder Butyl,alkohel. Das .als
Reduktionsmittel verwendete Sulfid kann der zu reduzierenden Nitroverhinduing in
gelöstem Zustande zugesetzt werden. Man kann aber auch die Nitroverbindung in dem
Lösungsmittel lösten und der erhaltenen Lösung das Sulfid zusetzen. Ferner ist es
möglich" die Nitroverhindun@g in dein Sullfidlösung zu emuilgieren. Gemäß einer
bevorzugten des erfindunigsagemäßen Verfahrens werden Schwefelwasserstoff und Atmrmoniak
in äquimolekularen Menagen in die alkoholli-
Claims (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL927506X | 1950-03-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE927506C true DE927506C (en) | 1955-05-09 |
Family
ID=19861811
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEN3687A Expired DE927506C (en) | 1950-03-31 | 1951-03-30 | Process for the production of oximes by reducing alicyclic nitroparaffins |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE927506C (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1001983B (en) * | 1955-08-09 | 1957-02-07 | Dr Eugen Mueller | Process for the preparation of aliphatic and cycloaliphatic ketoximes and their hydrochlorides |
DE1001982B (en) * | 1955-08-09 | 1957-02-07 | Dr Eugen Mueller | Process for the preparation of cyclooctanone oxime |
DE1021358B (en) * | 1955-01-13 | 1957-12-27 | Basf Ag | Process for the preparation of oximes |
DE1036845B (en) * | 1954-01-28 | 1958-08-21 | Stamicarbon | Process for the preparation of oximes from aliphatic and cycloaliphatic nitro compounds |
DE1073490B (en) * | 1960-01-21 | E I du Pont de Nemours and Company Wilmington Del (V St A) | Vcr drive to the production of ketoximes |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE825544C (en) * | 1949-12-01 | 1951-12-20 | Bayer Ag | Process for the preparation of oximes |
-
1951
- 1951-03-30 DE DEN3687A patent/DE927506C/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE825544C (en) * | 1949-12-01 | 1951-12-20 | Bayer Ag | Process for the preparation of oximes |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1073490B (en) * | 1960-01-21 | E I du Pont de Nemours and Company Wilmington Del (V St A) | Vcr drive to the production of ketoximes | |
DE1036845B (en) * | 1954-01-28 | 1958-08-21 | Stamicarbon | Process for the preparation of oximes from aliphatic and cycloaliphatic nitro compounds |
DE1021358B (en) * | 1955-01-13 | 1957-12-27 | Basf Ag | Process for the preparation of oximes |
DE1001983B (en) * | 1955-08-09 | 1957-02-07 | Dr Eugen Mueller | Process for the preparation of aliphatic and cycloaliphatic ketoximes and their hydrochlorides |
DE1001982B (en) * | 1955-08-09 | 1957-02-07 | Dr Eugen Mueller | Process for the preparation of cyclooctanone oxime |
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