| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a22da5b7dd6ed60a21538e5edb23e051 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D237-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C249-16 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C251-76 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D237-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C249-16 |
| filingDate |
1997-08-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2000-02-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6beae42e8ca7db63827bf4a22f2e14df
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_325200db68cd41bf704d254dd3fc44a2
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6d7824cf256bffcd35634268b87b13f5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_659a70d01e3fa6b14e081813c378038f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_03515385368dd0bb9c8aa5f26c6f158a |
| publicationDate |
2000-02-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-6025492-A |
| titleOfInvention |
Synthesis of a hydrazone β-keto ester by the reaction with a diazo ester |
| abstract |
The present invention relates to the synthesis of a hydrazone β-keto ester by the reaction of an alkyl diazoester with a hydrazone aldehyde in the presence of a Lewis acid In a preferred embodiment, the hydrazone β-keto ester is then converted into a pyridazinone compound by the reaction with an alkyl acid chloride in the presence of a base, followed by acidification. A process for the production of a hydrazone aldehyde, which comprises contacting a hydrazine and glyoxal, is also described. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112679291-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112679291-A |
| priorityDate |
1996-08-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |