| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D249-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D233-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D231-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D231-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D231-12 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D521-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-54 |
| filingDate |
1989-06-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1990-07-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ca927c8d5f480e35b1cbba2079bc5b45
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cd7a5d104fc72b8c2b79af64f9db5b41
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_beca83e4d64883fea3a6d3ccc2c0ebbe |
| publicationDate |
1990-07-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4945166-A |
| titleOfInvention |
Preparation of N-hydroxypyrazoles |
| abstract |
N-hydroxypyrazoles of the general formula I ##STR1## where R 1 , R 2 and R 3 may be identical or different and are each hydrogen, alkyl, halogen or aryl, or R 1 and R 2 or R 2 and R 3 together with the carbon atoms carrying these radicals form an aromatic or nonaromatic ring of 5 or 6 carbon atoms are prepared by a process in which n (A) a pyrazole of the general formula II ##STR2## is converted in a conventional manner with an alkali metal hydroxide, alkali metal hydride or alkali metal carbonate into one of its metal salts of the general formula III ##STR3## where ME⊕ is a cation of an alkali metal, and (B) the resulting metal salt of the general formula III is reacted with dibenzoyl peroxide in an inert organic solvent or in a 2-phase system, in the presence or absence of a phase transfer catalyst. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5484938-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5112985-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5332830-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5849929-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111841647-A |
| priorityDate |
1988-06-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |