http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7777052-B2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b09f81e7512064f3b843b3e86a339b2e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D231-44 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-44 |
| filingDate | 2006-04-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2010-08-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1d7641575c0a30dc3125235f4e815ca5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_633659a6341e1fe3e05ff0f3ce5208c4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_283c09f0a4caa09b725027e02d17b0e0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c60f32c7b55381f3c9ccba638aad53b1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8ec7397b415a730a5c9b95c520cfa7ae http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_53dbe9132cc303164f603f0e82052528 |
| publicationDate | 2010-08-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-7777052-B2 |
| titleOfInvention | Process for the preparation of Fipronil, an insecticide, and related pyrazoles |
| abstract | This invention relates to a process for the preparation of 5-amino-1-phenyl-3-cyano-4-trifluoromethyl sulphinyl pyrazoles as defined by Formula-I, n nwherein: R1=trifluoromethyl or trifluoromethoxy, and R2, R3=individually hydrogen, chlorine or bromine, the process comprising the step of oxidizing a compound of Formula-II,n n nwherein: R1=trifluoromethyl or trifluoromethoxy, and R2, R3=individually hydrogen, chlorine or bromine, in a medium comprising at least one oxidizing agent and trichloro acetic acid, and/or the reactions product (s) of the at least one oxidizing agent and trichloro acetic acid, and at least one melting point depressant. The preferred pyrazole is Fipronil, preferably prepared using hydrogen peroxide and dichloro acetic acid at room temperature. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2020188376-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10202352-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9198421-B2 |
| priorityDate | 2006-04-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 96.