| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_714df3cbf9e0d60d2ef3f452a6108125
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9547d1a3f4181a05de337e302d19e386
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C69-716
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D231-14 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-14 |
| filingDate |
1999-06-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_852fe53ab7c038932012527238ecb384
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_215b2443467ca0537e63588c7a4ccbef |
| publicationDate |
2000-01-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-0001673-A2 |
| titleOfInvention |
Method for preparing 1-alkyl-pyrazol-5-carboxylic acid esters |
| abstract |
The present invention relates to a method for preparing 1-alkyl-pyrazol-5-carboxylic acid esters, wherein said method involves reacting the enolate of a 2,4-diketocarboxylic acid ester with a salt of N-alkylhydrazinium in the presence of water and a solvent. This method can be used for readily preparing 1-alkyl-pyrazol-5-carboxylic acid esters at a low cost, while minimising the formation of unwanted isomers. |
| priorityDate |
1998-07-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |