http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9627589-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_03cdb0d23c0b5214f80333fee507e258 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c25b13c636afa370a373eaf6bbb7779b http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e9e2c856d4b0dce294313766d7e8f883 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D233-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D231-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D249-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D521-00 |
| filingDate | 1996-02-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_352c7a1377c300ecdc17d9ec92575464 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_85e1ad9def512701803f591a89a2dac2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cd25a2b69379b5d95d4be7b387de8c4e |
| publicationDate | 1996-09-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-9627589-A1 |
| titleOfInvention | Process for preparing n-substituted pyrazoles |
| abstract | A process is disclosed for preparing N-substituted pyrazoles having the general formula (I), in which R<1> stands for C1 to C12 alkyl or C7 to C20 phenylalkyl, and R<2>, R<3>, R<4> represent independently from each other hydrogen, C1 to C12 alkyl, C7 to C20 phenylalkyl or optionally substituted aryl residues, by reacting pyrazoles having the general formula (II), in which R<2>, R<3> and R<4> have above-said meanings, with an alcohol having the general formula (III) R<1>-O-H, in which R<1> has above-said meanings, at temperatures from 50 to 400 DEG C in the presence of a catalyst. The reaction of pyrazole (II) with compound (III) is carried out in a molar ratio from 0.001:1 to 1:1 in the liquid phase at a slight negative pressure up to an overpressure of 250 bars. Acids, their alkyl esters and/or their anhydrides are used as catalysts in a molar ratio from 0.0001:1 to 0.5:1 in relation to pyrazole (II). |
| priorityDate | 1995-03-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 119.