GB1313246A - Process for the preparation of pure dehydroacetic acid - Google Patents
Process for the preparation of pure dehydroacetic acidInfo
- Publication number
- GB1313246A GB1313246A GB4630471A GB4630471A GB1313246A GB 1313246 A GB1313246 A GB 1313246A GB 4630471 A GB4630471 A GB 4630471A GB 4630471 A GB4630471 A GB 4630471A GB 1313246 A GB1313246 A GB 1313246A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dehydroacetic acid
- pure
- preparation
- acid
- dehydroacetic
- 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
- 239000004287 Dehydroacetic acid Substances 0.000 title abstract 3
- JEQRBTDTEKWZBW-UHFFFAOYSA-N dehydroacetic acid Chemical compound CC(=O)C1=C(O)OC(C)=CC1=O JEQRBTDTEKWZBW-UHFFFAOYSA-N 0.000 title abstract 3
- 229940061632 dehydroacetic acid Drugs 0.000 title abstract 3
- PGRHXDWITVMQBC-UHFFFAOYSA-N dehydroacetic acid Natural products CC(=O)C1C(=O)OC(C)=CC1=O PGRHXDWITVMQBC-UHFFFAOYSA-N 0.000 title abstract 3
- 235000019258 dehydroacetic acid Nutrition 0.000 title abstract 3
- 239000002253 acid Substances 0.000 abstract 1
- 239000003610 charcoal Substances 0.000 abstract 1
- 239000013058 crude material Substances 0.000 abstract 1
- 238000005292 vacuum distillation Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D309/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
- C07D309/34—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D309/36—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with oxygen atoms directly attached to ring carbon atoms
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1313246 Dehydroacetic acid LONZA Ltd 5 Oct 1971 [1 Dec 1970] 46304/71 Heading C2C] Dehydroacetic acid is purified by adding active charcoal to the crude material, followed by vacuum distillation of the acid.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1775270A CH537920A (en) | 1970-12-01 | 1970-12-01 | Process for the production of pure dehydracetic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1313246A true GB1313246A (en) | 1973-04-11 |
Family
ID=4427822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4630471A Expired GB1313246A (en) | 1970-12-01 | 1971-10-05 | Process for the preparation of pure dehydroacetic acid |
Country Status (12)
| Country | Link |
|---|---|
| AT (1) | AT308748B (en) |
| BE (1) | BE775985A (en) |
| CA (1) | CA963423A (en) |
| CH (1) | CH537920A (en) |
| CS (1) | CS164915B2 (en) |
| DE (1) | DE2159634A1 (en) |
| FR (1) | FR2117164A5 (en) |
| GB (1) | GB1313246A (en) |
| IT (1) | IT942222B (en) |
| LU (1) | LU64376A1 (en) |
| NL (1) | NL7113430A (en) |
| SU (1) | SU405202A3 (en) |
-
1970
- 1970-12-01 CH CH1775270A patent/CH537920A/en not_active IP Right Cessation
-
1971
- 1971-09-30 NL NL7113430A patent/NL7113430A/xx unknown
- 1971-10-05 GB GB4630471A patent/GB1313246A/en not_active Expired
- 1971-10-15 IT IT5349371A patent/IT942222B/en active
- 1971-11-05 CS CS777271A patent/CS164915B2/cs unknown
- 1971-11-24 CA CA128,449A patent/CA963423A/en not_active Expired
- 1971-11-29 FR FR7142758A patent/FR2117164A5/fr not_active Expired
- 1971-11-29 BE BE775985A patent/BE775985A/en unknown
- 1971-11-30 LU LU64376D patent/LU64376A1/xx unknown
- 1971-11-30 SU SU1720173A patent/SU405202A3/ru active
- 1971-11-30 AT AT1030271A patent/AT308748B/en not_active IP Right Cessation
- 1971-12-01 DE DE19712159634 patent/DE2159634A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| AT308748B (en) | 1973-07-25 |
| LU64376A1 (en) | 1973-06-21 |
| CH537920A (en) | 1973-06-15 |
| FR2117164A5 (en) | 1972-07-21 |
| BE775985A (en) | 1972-05-29 |
| NL7113430A (en) | 1972-06-05 |
| DE2159634A1 (en) | 1972-06-08 |
| CS164915B2 (en) | 1975-11-28 |
| CA963423A (en) | 1975-02-25 |
| SU405202A3 (en) | 1973-10-22 |
| IT942222B (en) | 1973-03-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |