WO1999028294A1 - Procede de fabrication de thioesters methacryliques - Google Patents
Procede de fabrication de thioesters methacryliques Download PDFInfo
- Publication number
- WO1999028294A1 WO1999028294A1 PCT/FR1998/002445 FR9802445W WO9928294A1 WO 1999028294 A1 WO1999028294 A1 WO 1999028294A1 FR 9802445 W FR9802445 W FR 9802445W WO 9928294 A1 WO9928294 A1 WO 9928294A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- methacrylic
- reaction
- methacrylic anhydride
- thioesters
- carried out
- 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.)
- Ceased
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C327/00—Thiocarboxylic acids
- C07C327/20—Esters of monothiocarboxylic acids
- C07C327/22—Esters of monothiocarboxylic acids having carbon atoms of esterified thiocarboxyl groups bound to hydrogen atoms or to acyclic carbon atoms
Definitions
- the present invention relates to a process for the manufacture of methacrylic thioesters of general formula (I):
- R represents a linear primary alkyl radical containing from 3 to 12 carbon atoms.
- the Depositing Company has developed an alternative route which overcomes all the drawbacks described above.
- the subject of the present invention is in fact a process for the manufacture of a thioester of formula (I) such as defined above, characterized in that methacrylic anhydride is reacted with a mercaptan of formula RSH, R being as defined above.
- the reaction is carried out in the presence of an cation exchange resin in H form as catalyst.
- Resins of interest are those obtained by sulfonating a copolymer of styrene and divinylbenzene.
- reaction according to the invention is generally carried out under a nitrogen atmosphere, at a temperature of 40 to 100 ° C, in particular from 50 to 70 ° C, and preferably in the absence of solvent.
- the molar ratio of methacrylic anhydride to mercaptan RSH is preferably between 0.5 and 2, more particularly between 0.8 and 1.2.
- the methacrylic anhydride is advantageously used by being stabilized by a stabilizer such as bis tert-butyl hydroxytoluene.
- the filtrate stabilized with 5000 ppm of copper dibutyldithiocarbamate, is distilled under reduced pressure to obtain thiobutyl methacrylate with 70% yield and a CPG purity greater than 98%.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU12432/99A AU1243299A (en) | 1997-11-27 | 1998-11-17 | Method for making methacrylic thioesters |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9714936A FR2771410B1 (fr) | 1997-11-27 | 1997-11-27 | Procede de fabrication de thioesters methacryliques |
| FR97/14936 | 1997-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1999028294A1 true WO1999028294A1 (fr) | 1999-06-10 |
Family
ID=9513881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR1998/002445 Ceased WO1999028294A1 (fr) | 1997-11-27 | 1998-11-17 | Procede de fabrication de thioesters methacryliques |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU1243299A (fr) |
| FR (1) | FR2771410B1 (fr) |
| WO (1) | WO1999028294A1 (fr) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2269523A1 (fr) * | 1974-05-01 | 1975-11-28 | Pennwalt Corp | |
| US5424472A (en) * | 1992-10-10 | 1995-06-13 | Roehm Gmbh Chemische Fabrik Patentabteilung | Method of manufacturing a (meth)acryloylthio compound |
-
1997
- 1997-11-27 FR FR9714936A patent/FR2771410B1/fr not_active Expired - Fee Related
-
1998
- 1998-11-17 WO PCT/FR1998/002445 patent/WO1999028294A1/fr not_active Ceased
- 1998-11-17 AU AU12432/99A patent/AU1243299A/en not_active Abandoned
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2269523A1 (fr) * | 1974-05-01 | 1975-11-28 | Pennwalt Corp | |
| US5424472A (en) * | 1992-10-10 | 1995-06-13 | Roehm Gmbh Chemische Fabrik Patentabteilung | Method of manufacturing a (meth)acryloylthio compound |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2771410A1 (fr) | 1999-05-28 |
| FR2771410B1 (fr) | 2000-01-14 |
| AU1243299A (en) | 1999-06-16 |
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