DE463123C - Process for the preparation of nitriles - Google Patents
Process for the preparation of nitrilesInfo
- Publication number
- DE463123C DE463123C DEI27817D DEI0027817D DE463123C DE 463123 C DE463123 C DE 463123C DE I27817 D DEI27817 D DE I27817D DE I0027817 D DEI0027817 D DE I0027817D DE 463123 C DE463123 C DE 463123C
- Authority
- DE
- Germany
- Prior art keywords
- nitriles
- preparation
- vapors
- alcohols
- highly porous
- 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
- C07C255/00—Carboxylic acid nitriles
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung von Nitrilen Es wurde gefunden, daß man in kontinuierlicher, technisch gut durchführbarer Weise und mit guten Ausbeuten Nitrile darstellen kann, wenn man bei erhöhter Temperatur die Dämpfe von Alkoholen in Gegenwart von Blausäure über hochporöse Kontaktstoffe leitet. Als Kontakte kommen alle hochporösen Stoffe in Betracht, besonders aktive Kohle, Silica-Gel, Tonerde oder Thoroxyd, und zwar sowohl für sich als auch in Gemischen miteinander. Da sowohl einwertige als auch mehrwertige primäre, sekundäre und tertiäre Alkohole sich hierbei in Nitrile überführen lassen, ist damit ein weiterer Weg zum Aufbau höherer Kohlenstoffketten und wertvoller Vorprodukte gegeben.Process for the preparation of nitriles It has been found that one in a continuous, technically feasible manner and with good yields Nitriles can be represented by the vapors of alcohols at elevated temperatures conducts over highly porous contact substances in the presence of hydrocyanic acid. Come as contacts all highly porous substances are considered, especially active charcoal, silica gel, clay or thoroxide, both on its own and in mixtures with one another. As both Monohydric as well as polyhydric primary, secondary and tertiary alcohols are here Conversion into nitriles is another way of building higher carbon chains and valuable preliminary products.
Beispiel r.Example r.
Über hochaktive Kohle, die auf 32o° geheizt ist, wird ein Gemisch der Dämpfe von Blausäure und :Methylalkohol geleitet, wobei das Gemisch so gewählt ist, daß Blausäure im (rberschuß vorhanden ist. Das den Kontakt verlassende, durch Kühlung kondensierte Reaktionsprodukt wird fraktioniert, etwa unveränderter Methylalkohol in dem Prozeß zurückgegeben und das bei 75 bis 85° übergehende Rohacetonitril nochmals durch Destillation gereinigt. Man erhält so in guter Ausbeute reines Acetonitril vom Siedepunkt 82°. Beispie12. Über Silica-Gel, dem io °/o Tonerde beigemengt ist, werden bei 38o° Diäthylcarbinoldämpfe mit Blausäure gemischt geleitet. Das Reaktionsprodukt wird wie in Beispiel i aufgearbeitet und ergibt in guter Ausbeute das Diäthylessigsäurenitril vom Siedepunkt 1440.A mixture is created over highly active coal, which is heated to 32o ° the vapors of hydrogen cyanide and: methyl alcohol passed, the mixture being so chosen is that there is an excess of hydrogen cyanide Cooling condensed reaction product is fractionated, roughly unchanged methyl alcohol returned in the process and the crude acetonitrile passing over at 75 to 85 ° again purified by distillation. Pure acetonitrile is thus obtained in good yield with a boiling point of 82 °. Example12. Using silica gel to which 100% clay is added, diethyl carbinol vapors mixed with hydrocyanic acid are passed through at 38o °. The reaction product is worked up as in Example i and gives the diethyl acetic acid nitrile in good yield from boiling point 1440.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEI27817D DE463123C (en) | 1926-04-02 | 1926-04-02 | Process for the preparation of nitriles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEI27817D DE463123C (en) | 1926-04-02 | 1926-04-02 | Process for the preparation of nitriles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE463123C true DE463123C (en) | 1928-07-23 |
Family
ID=7186873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEI27817D Expired DE463123C (en) | 1926-04-02 | 1926-04-02 | Process for the preparation of nitriles |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE463123C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE740638C (en) * | 1941-03-06 | 1943-10-25 | Ig Farbenindustrie Ag | Process for the preparation of pyridines in addition to nitriles, etc. |
| US2455995A (en) * | 1947-07-05 | 1948-12-14 | Du Pont | Production of nitriles from certain olefins and hcn |
| US2467373A (en) * | 1944-09-18 | 1949-04-19 | Phillips Petroleum Co | Production of nitriles |
| US2956063A (en) * | 1958-07-24 | 1960-10-11 | Burroughs Wellcome Co | Process for the manufacture of xanthene carboxylic acid derivatives |
-
1926
- 1926-04-02 DE DEI27817D patent/DE463123C/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE740638C (en) * | 1941-03-06 | 1943-10-25 | Ig Farbenindustrie Ag | Process for the preparation of pyridines in addition to nitriles, etc. |
| US2467373A (en) * | 1944-09-18 | 1949-04-19 | Phillips Petroleum Co | Production of nitriles |
| US2455995A (en) * | 1947-07-05 | 1948-12-14 | Du Pont | Production of nitriles from certain olefins and hcn |
| US2956063A (en) * | 1958-07-24 | 1960-10-11 | Burroughs Wellcome Co | Process for the manufacture of xanthene carboxylic acid derivatives |
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