GB1256847A - - Google Patents
Info
- Publication number
- GB1256847A GB1256847A GB1256847DA GB1256847A GB 1256847 A GB1256847 A GB 1256847A GB 1256847D A GB1256847D A GB 1256847DA GB 1256847 A GB1256847 A GB 1256847A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- tetronic
- tetronic acid
- monochloro
- lonza
- 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
- 239000002253 acid Substances 0.000 abstract 3
- PGRHXDWITVMQBC-UHFFFAOYSA-N dehydroacetic acid Natural products CC(=O)C1C(=O)OC(C)=CC1=O PGRHXDWITVMQBC-UHFFFAOYSA-N 0.000 abstract 3
- PEQJBOMPGWYIRO-UHFFFAOYSA-N n-ethyl-3,4-dimethoxyaniline Chemical compound CCNC1=CC=C(OC)C(OC)=C1 PEQJBOMPGWYIRO-UHFFFAOYSA-N 0.000 abstract 3
- 150000003839 salts Chemical class 0.000 abstract 2
- 239000003513 alkali Substances 0.000 abstract 1
- 150000004982 aromatic amines Chemical class 0.000 abstract 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 abstract 1
- XYIBRDXRRQCHLP-UHFFFAOYSA-N ethyl acetoacetate Chemical compound CCOC(=O)CC(C)=O XYIBRDXRRQCHLP-UHFFFAOYSA-N 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 150000002596 lactones Chemical class 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 238000010992 reflux Methods 0.000 abstract 1
- 238000002061 vacuum sublimation Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D307/56—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D307/60—Two oxygen atoms, e.g. succinic anhydride
Abstract
1,256,847. Tetronic acid. LONZA Ltd. 27 May, 1970 [28 May, 1969], No. 25354/70. Heading C2C. Tetronic acid or its salts are produced by reacting a γ-monochloro acetoacetic ester in an aromatic hydrocarbon with an aromatic amine at reflux temperature to form the corresponding #-arylamino crotonic. acid lactone of formula and converting this with aqueous alkali into a salt of tetronic acid; optionally liberating the free acid by treatment with an aqueous mineral acid and isolating it by vacuum sublimation under pressures below 0À5 mm. Hg and temperatures of 95-100 C.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH807669A CH503722A (en) | 1969-05-28 | 1969-05-28 | Process for the production of tetronic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1256847A true GB1256847A (en) | 1971-12-15 |
Family
ID=4334771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1256847D Expired GB1256847A (en) | 1969-05-28 | 1970-05-27 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | USRE28242E (en) |
| CH (1) | CH503722A (en) |
| DE (1) | DE2025570C3 (en) |
| FR (1) | FR2048922A5 (en) |
| GB (1) | GB1256847A (en) |
| NL (1) | NL7007741A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8344151B2 (en) | 2009-12-23 | 2013-01-01 | Bayer Cropscience Ag | Process for the preparation of 4-aminobut-2-enolides starting from 4-alkoxyfuran-2(5H)-one or 4-arylalkoxyfuran-2(5H)-one |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4310463A (en) | 1979-02-22 | 1982-01-12 | Chevron Research | 3-(N-Arylamino)-gamma-butyrolactones, butyrolactams and thiobutyrolactones are intermediates for compounds having fungicidal activity |
| CH649996A5 (en) | 1981-06-17 | 1985-06-28 | Lonza Ag | PROCESS FOR THE PRODUCTION OF TETRONIC ACID. |
| EP0358128B1 (en) * | 1988-09-06 | 1995-06-28 | Lonza Ag | Process for the preparation of 5-alkyltetramic acids |
| DE59006113D1 (en) * | 1989-07-20 | 1994-07-21 | Lonza Ag | Process for the preparation of tetronic acid alkyl esters. |
| EP2042496A1 (en) | 2007-09-18 | 2009-04-01 | Bayer CropScience AG | Method for manufacturing 4-aminobut-2-enolids |
| EP2039678A1 (en) | 2007-09-18 | 2009-03-25 | Bayer CropScience AG | Method for manufacturing 4-aminobut-2-enolids |
| EP2230237A1 (en) | 2009-03-16 | 2010-09-22 | Bayer CropScience AG | New method for producing enaminocarbonyl compounds |
| EP2230236A1 (en) | 2009-03-16 | 2010-09-22 | Bayer CropScience AG | New method for producing enaminocarbonyl compounds |
| TW201111370A (en) | 2009-08-18 | 2011-04-01 | Bayer Cropscience Ag | Novel process for the preparation of 4-aminobut-2-enolides |
-
1969
- 1969-05-28 CH CH807669A patent/CH503722A/en not_active IP Right Cessation
-
1970
- 1970-05-26 DE DE2025570A patent/DE2025570C3/en not_active Expired
- 1970-05-27 GB GB1256847D patent/GB1256847A/en not_active Expired
- 1970-05-28 FR FR7019529A patent/FR2048922A5/fr not_active Expired
- 1970-05-28 NL NL7007741A patent/NL7007741A/xx not_active Application Discontinuation
-
1974
- 1974-02-07 US US44102874 patent/USRE28242E/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8344151B2 (en) | 2009-12-23 | 2013-01-01 | Bayer Cropscience Ag | Process for the preparation of 4-aminobut-2-enolides starting from 4-alkoxyfuran-2(5H)-one or 4-arylalkoxyfuran-2(5H)-one |
Also Published As
| Publication number | Publication date |
|---|---|
| NL7007741A (en) | 1970-12-01 |
| DE2025570A1 (en) | 1970-12-03 |
| USRE28242E (en) | 1974-11-12 |
| DE2025570C3 (en) | 1980-03-06 |
| FR2048922A5 (en) | 1971-03-19 |
| DE2025570B2 (en) | 1979-07-05 |
| CH503722A (en) | 1971-02-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |