GB1316054A - Process for the production of isothymol - Google Patents
Process for the production of isothymolInfo
- Publication number
- GB1316054A GB1316054A GB3728471A GB3728471A GB1316054A GB 1316054 A GB1316054 A GB 1316054A GB 3728471 A GB3728471 A GB 3728471A GB 3728471 A GB3728471 A GB 3728471A GB 1316054 A GB1316054 A GB 1316054A
- Authority
- GB
- United Kingdom
- Prior art keywords
- temperature
- isomerization
- isothymol
- cresol
- aug
- 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
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/11—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms
- C07C37/14—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms by addition reactions, i.e. reactions involving at least one carbon-to-carbon unsaturated bond
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
1316054 Isothymol UNION RHEINISCHE BRAUNKOHLEN KRAFTSTOFF AG 9 Aug 1971 [10 Aug 1970] 37284/71 Heading C2C Isothymol is prepared by alkylating m-cresol with propylene in the presence of an aqueous catalyst solution which contains zinc bromide or chloride and which is activated by the addition of a small quantity of hydrogen bromide or chloride, at a temperature of up to 140‹ C., followed by isomerization at a temperature of 140‹ to 200‹ C., the constituents of the reaction mixture which boil below the isomerization temperature being separated off by distillation either before or during isomerization. In one embodiment the mixture of m-cresol and catalyst solution is initially heated to a predetermined isomerization temperature to drive off materials boiling below the isomerization temperature, the resulting mixture is cooled to a predetermined alkylation temperature, propylene is added and the resulting mixture is alkylated and isomerized.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702039600 DE2039600A1 (en) | 1970-08-10 | 1970-08-10 | Process for the production of isothymol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1316054A true GB1316054A (en) | 1973-05-09 |
Family
ID=5779300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3728471A Expired GB1316054A (en) | 1970-08-10 | 1971-08-09 | Process for the production of isothymol |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT312583B (en) |
| BE (1) | BE770930A (en) |
| CH (1) | CH550124A (en) |
| DE (1) | DE2039600A1 (en) |
| FR (1) | FR2104135A5 (en) |
| GB (1) | GB1316054A (en) |
| NL (1) | NL7110486A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2242628A1 (en) * | 1972-08-30 | 1974-03-07 | Bayer Ag | PROCESS FOR THE PRODUCTION OF 5-ISOPROPYL-3-METHYL-PHENOL |
| CN113304743B (en) * | 2021-05-14 | 2022-01-04 | 安徽海华科技集团有限公司 | Method for preparing high-purity carvacrol by using o-cresol |
-
1970
- 1970-08-10 DE DE19702039600 patent/DE2039600A1/en active Pending
-
1971
- 1971-06-24 CH CH926371A patent/CH550124A/en not_active IP Right Cessation
- 1971-07-29 NL NL7110486A patent/NL7110486A/xx unknown
- 1971-08-04 BE BE770930A patent/BE770930A/en unknown
- 1971-08-05 AT AT685971A patent/AT312583B/en active
- 1971-08-09 GB GB3728471A patent/GB1316054A/en not_active Expired
- 1971-08-09 FR FR7129098A patent/FR2104135A5/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH550124A (en) | 1974-06-14 |
| NL7110486A (en) | 1972-02-14 |
| AT312583B (en) | 1974-01-10 |
| FR2104135A5 (en) | 1972-04-14 |
| BE770930A (en) | 1971-12-16 |
| DE2039600A1 (en) | 1972-02-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |