| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b051f9f7933c758e66f6ceda5c9fb2cc |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-307
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-63 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-63
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-716
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-307
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-167 |
| filingDate |
1999-11-01-04:00^^<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_511a72247fe96f6efb000292617247f3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_eacc1223d8540cbd895a04ef0ee87069 |
| publicationDate |
2002-09-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-6455728-B1 |
| titleOfInvention |
Direct fluorination process for preparing high purity 2-fluoro-1,3-dicarbonyl compounds using oxygen as a radical scavenger |
| abstract |
A process for fluorinating beta-dicarbonyls to form the corresponding alpha-fluorinated-beta-dicarbonyl compounds is provided. The process is represented by the following reaction scheme:where R1 is H, alkyl or alkoxy, R2 is H, alkyl or perfluoroalkyl, and R3 is H, Cl, Br, I or alkyl. Use of oxygen in the fluorine stream yields a product which is 90-96% pure and contains radical fluorination impurity levels which are 10-20% lower than when oxygen is not used. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111349018-A |
| priorityDate |
1999-11-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |