| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_59e1d955a7b1560dc68cf7fd800e8fac
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_db9e1e2e4fa1ffb037696e42bcce8b64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_53fcd1d4a7fd8eb117a9297522039ef7
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7e672ce54ccac612c3fbe3f6e9ca9003
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_553938ceb16bca4c6075bc45d8e1dc0b |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D311-58 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-58 |
| filingDate |
1999-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9a243c3993e344236591e6f7f444adba
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7ee9063b1424f2aef2acca106c4050ef
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1a5ae00fdbb684e18b91b9a1a941f1cd
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4965f3f0801f04fcf3e505c0ba699281 |
| publicationDate |
2000-04-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-0018754-A1 |
| titleOfInvention |
Processes for the preparation of 4-substituted benzopyran derivatives |
| abstract |
A process for the preparation of 4-substituted benzopyran derivatives which comprises preparing N-(2-cyanoethyl)-5-fluoro-4-fluoromethyl-4-(4-trifluoromethylphenoxy)-2-pentynamide from 1-fluoro-2-fluoromethyl-3-butyn-2-yl 4-trifluoromethylphenyl ether and cyclizing this pentynamide derivative into 2,2-bis(fluoromethyl)-N-(2-cyanoethyl)-6-trifluoromethyl-2H-1-benzopyran-4-carboxamide; and other processes therefor. The processes make it possible to prepare the benzopyran derivatives in a shortened process time as compared with those of the prior art with high safety through easy purification. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6653488-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6608217-B2 |
| priorityDate |
1998-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |