http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S62277337-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_129e393582e6bdf4029baf2206522f45 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-78 |
| filingDate | 1986-05-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8c183b990cf828141a3636d8ba30d651 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_050f07a7a2e390ae4fc83457f3625d8e |
| publicationDate | 1987-12-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S62277337-A |
| titleOfInvention | Method for purifying o-methylacetophenone |
| abstract | PURPOSE: To remove by-products simply and to obtain the titled compound useful as a raw material for drugs and agricultural chemicals in high purity, by reacting O-toluic acid and acetic acid or acetone, inexpensive raw materials, in a gaseous phase and treating the prepared crude reaction product with sulfuric acid. n CONSTITUTION: O-Toluic acid is reacted with acetic acid or acetone in a gaseous phase, the prepared crude O-methylacetophenone is mixed with 5W50wt%, preferably about 15W40wt% based on the crude reaction product of sulfuric acid, preferably 60W100wt%, especially about 70W90t% concn. sulfuric acid at 0°CW100°C, preferably about room temperature, allowed to stand and treated. Then, the treated blend is separated into a sulfuric acid layer and an oil layer and the aimed compound is obtained from the oil layer. The molar ratio of the O-toluic acid and acetic acid or acetone of the raw materials fed is preferably about 1:1W10 and an inert gas such as carbon dioxide, etc., may exist besides the raw materials. n COPYRIGHT: (C)1987,JPO&Japio |
| priorityDate | 1986-05-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.