| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_551b6f32e42e3fbaad6f175d4d15b050 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-10 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C215-74
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-10 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C231-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C233-25
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C231-10 |
| filingDate |
2001-07-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2580c49bbded0d4e8424b5b92b8a8b64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_64e76d426e6725f8e8eda87076eb3e6d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1b2016fcfee06e3cb06842d7104f1abb
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ea95cba8273e13243b30c4a961eecd98
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5e8b6412f607b90ab8773834d290436f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9d80cf923c90822aa80d4d9a433f020d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cebc40e087fa344f2a3f66eb4e512062 |
| publicationDate |
2002-01-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-2002030055-A |
| titleOfInvention |
Method for producing acetaminophenone |
| abstract |
(57) [Summary] [Purpose] In alkaline alkanoate reaction solvent N-acetylparaaminophenol is produced by contacting 4-hydroxyacetophenone oxime with a Beckmann rearrangement catalyst. The present invention provides a method for preparing 4-hydroxyacetophenone oxime by reacting 4-hydroxyacetophenone with a hydroxylamine salt and a base, extracting the oxime product from the resulting reaction mixture with a substantially water-immiscible solvent, And contacting a substantially water-immiscible solvent with a Beckmann rearrangement catalyst to produce N-acetyl paraaminophenol. A new Beckmann rearrangement catalyst is used to limit the formation of by-products in ester solvents. |
| priorityDate |
1990-07-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |