| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D231-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D231-18 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-18 |
| filingDate |
1995-04-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2000-11-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3711c41b33311c06598c8b372959e274
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_567d97e551071391e7195c7633c3296c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c21ccbb55ae3c3cf30499490443d534d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_64bfa4f2ad5dd797ff83dddaa6028ef1
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_322f43635c026e77826227fc68bdb6ed |
| publicationDate |
2000-11-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0680954-B1 |
| titleOfInvention |
Process of preparation of 1-(Het)aryl-3-hydroxy pyrazoles |
| abstract |
The prepn. of 1-(Hetero)aryl-3-hydroxy-pyrazoles of formula (I) comprises mixing propiolic acid esters of formula R1C IDENTICAL CCOOR' (II) with (hetero)arylhydrazine derivs. of formula RNHNH2 (III) in an inert solvent; and then treating with a base at 0-60 degrees C. R = opt. substd. aromatic or heteroaromatic; n = 0, 1 or 2; R1 = a gp. which is stable under the reaction conditions; R' = alkyl, cycloalkyl or aryl. |
| priorityDate |
1994-05-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |