http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2012167122-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e559abcd8f120b071dc1162360867ffa http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_173bc2c63b34988699010ba05e5b1376 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C17-093 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07B39-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C25-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C25-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C17-093 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C17-383 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-36 |
| filingDate | 2012-06-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7730288436defaa8f6dada3170b1b44b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fce7e5cb529e644c6b2f54b775af1216 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_28f17f61a83cd5adb2130c02c3668ce5 |
| publicationDate | 2012-09-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2012167122-A |
| titleOfInvention | Process for producing substituted 3-hydroxy-4-aryl-5-oxopyrazolin derivatives having herbicidal effect |
| abstract | A substituted benzene derivative, which is a main intermediate in a method for preparing a substituted 3-hydroxy-4-aryl-5-oxopyrazolin derivative having a herbicidal effect, has a higher yield than a known method. Can be prepared with considerable cost advantage. The present invention provides a method for producing an intermediate compound of formula (I) wherein the substituents are as defined herein. The process involves reacting a substituted aniline with aqueous HX, then removing the water by azeotropic distillation and diazotization with an organic nitrite in the absence of copper catalyst at elevated temperature and heat. Comprising disassembling. Alternatively, gaseous HX can be used in the process instead of aqueous HX. As a result, the water removal step by azeotropic distillation can be omitted. The intermediate compounds of formula I are suitable as intermediates in the preparation of herbicidally active 3-hydroxy-4-aryl-5-oxypyrazolin derivatives. [Selection figure] None |
| priorityDate | 2005-02-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 137.