http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103570617-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-89 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-89 |
| filingDate | 2013-11-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2016-05-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2016-05-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103570617-B |
| titleOfInvention | A kind of preparation method of 3-cyano group-pyridine N-oxides |
| abstract | The invention provides a kind of preparation method of 3-cyano group-pyridine N-oxides, add nicotinonitrile in reaction bulb, with water as solvent, sulfuric acid is cocatalyst, after heating, drips oxidant, and completely rear cooling, standing, the filtration of oxidation reaction, dries and get final product. Efficient preparation 3-cyano group-N-oxide of the inventive method high selectivity, and niacinamide-N-oxide content is very low, is conducive to the carrying out of next step chlorination, improves the synthesis yield of 2-chlorine apellagrin. Use the inventive method preparation cost low, and the purity of oxidation product and yield improve, and are applicable to suitability for industrialized production. |
| priorityDate | 2013-11-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 48.