GB812058A - Process for the alkylation of amines - Google Patents
Process for the alkylation of aminesInfo
- Publication number
- GB812058A GB812058A GB15691/55A GB1569155A GB812058A GB 812058 A GB812058 A GB 812058A GB 15691/55 A GB15691/55 A GB 15691/55A GB 1569155 A GB1569155 A GB 1569155A GB 812058 A GB812058 A GB 812058A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alkylation
- amine
- aniline
- agent
- methanol
- 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
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/04—Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups
- C07C209/14—Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups by substitution of hydroxy groups or of etherified or esterified hydroxy groups
- C07C209/18—Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups by substitution of hydroxy groups or of etherified or esterified hydroxy groups with formation of amino groups bound to carbon atoms of six-membered aromatic rings or from amines having nitrogen atoms bound to carbon atoms of six-membered aromatic rings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/009—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping in combination with chemical reactions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
In a process for the alkylation of an aromatic amine by an alkylation agent consisting of an aliphatic alcohol or ether having a lower boiling point than the amine, the amine and said alkylation agent are brought together in the presence of a catalyst at a temperature sufficient to effect alkylation of the amine while said amine is maintained in liquid condition, said catalyst being selected from substances known to be catalysts in the alkylation of amines, said amine and alkylation agent being brought together by feeding said alkylation agent into a body of said amine maintained at the required temperature and simultaneously removing unreacted alkylation agent from said amine until the required degree of alkylation of the amine is obtained. The process may also be carried out by conducting the two reactants through a liquid catalysing the reaction and known to be a catalyst in the alkylation of amines. Catalysts mentioned include hydrochloric acid, phosphorus trichloride and phosphorus oxychloride. Apparatuses for batchwise and continuous countercurrent operation are described. In examples, ethyl and methyl anilines are obtained by passing alcohol through heated aniline at a pressure of 1.5 atmospheres in the presence of phosphorus trichloride (1-3) and (10); dimethyl aniline, optionally with some monomethyl aniline, is obtained in a similar process using methanol as alkylating agent (4); mono- and di-methyl aniline are obtained by passing a mixture of methanol and aniline through heated concentrated phosphoric acid at a pressure of about 1.5 atmospheres (5)-(7) and (9); alkylation is effected with dimethyl ether or a mixture of dimethyl ether and methanol in a process similar to (1), (8). Specification 673,433 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE812058X | 1954-06-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB812058A true GB812058A (en) | 1959-04-15 |
Family
ID=6729378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15691/55A Expired GB812058A (en) | 1954-06-01 | 1955-06-01 | Process for the alkylation of amines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB812058A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4150054A (en) * | 1976-12-24 | 1979-04-17 | Bayer Aktiengesellschaft | N-akylation of aromatic amines in the presence of an aliphatic amino compound |
-
1955
- 1955-06-01 GB GB15691/55A patent/GB812058A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4150054A (en) * | 1976-12-24 | 1979-04-17 | Bayer Aktiengesellschaft | N-akylation of aromatic amines in the presence of an aliphatic amino compound |
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