| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9ce023a6c13740cb05a67332f11a29f9 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C12C11-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-49
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C29-124 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-49
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-124 |
| filingDate |
2001-09-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2002-09-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c65ea65a8e5a58bbc3ad08adc8cf5e85
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_92fc0972ea72120e01477837ea90a0bd
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_675b02d725dc6628a552d183e56eb37c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_18095acea9c8e19f8f248eb7c688dc09 |
| publicationDate |
2002-09-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-6455739-B1 |
| titleOfInvention |
Production of 4-fluorobenzaldehyde |
| abstract |
4-Fluorobenzaldehyde is produced by a commercially feasible process. The process comprises heating a mixture of fluorobenzene and a strong Lewis acid with dissolved hydrogen halide in an atmosphere of carbon monoxide at about 45 to about 100° C. and at a total pressure of about 150 psig up to the maximum pressure rating of the reactor. Formed is a reaction mass containing a Lewis acid complex of 4-fluorobenzaldehyde and at least a halobis(fluorophenyl)methane by-product. The complex is broken by quenching the reaction mass with a Lewis acid-solvating liquid to liberate 4-fluorobenzaldehyde. By-product halobis(fluorophenyl)methane is converted to di(fluorophenyl)methanol to avoid potential corrosion problems and formation of light sensitive color bodies in the recovered 4-fluorobenzaldehyde. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7241925-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1544189-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-102007032451-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005143605-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-100526278-C
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112358390-A |
| priorityDate |
2001-09-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |