http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2009536160-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D231-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D271-06 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D271-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-38 |
| filingDate | 2007-04-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2009-10-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2009536160-A |
| titleOfInvention | Synthesis of 5-β-keto-1,2,4-oxadiazole and conversion of 5-β-keto-1,2,4-oxadiazole to N-pyrazolyl amidoxime |
| abstract | The disclosed invention prepares a 5-β-keto-1,2,4-oxadiazole of formula (I) and converts 5-β-keto-1,2,4-oxadiazole (I) It relates to a process for conversion to N-pyrazolylamidoxime of formula (II) by reaction with hydrazine. This method consists of two steps. The amidoxime can be prepared in situ and is condensed with a β-keto ester to form 5-β-keto-1,2,4-oxadiazole. Subsequently, 5-β-keto-1,2,4-oxadiazole is reacted with hydrazine to give the desired N-pyrazolyl amidoxime. The disclosed invention presents several advantages over current techniques for the synthesis of N-pyrazolyl amidoximes that require the reaction of hydroxylamine following the condensation of pyrazolylamine with an active substrate. N-pyrazolyl amidoxime is a particularly useful synthetic intermediate for the preparation of photographic developing chemicals. [Chemical 1] |
| priorityDate | 2006-04-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 63.