http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108440425-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D241-44 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D241-44 |
| filingDate | 2018-03-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-10-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-10-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108440425-B |
| titleOfInvention | Preparation method of 3-methylquinoxaline-2-carboxylic acid |
| abstract | The invention discloses a preparation method of 3-methylquinoxaline-2-carboxylic acid, which comprises the following steps: reacting the compound shown in the formula III with acetate to prepare a compound shown in the formula II; reacting a compound shown in a formula II with o-phenylenediamine under an acidic condition to prepare a compound shown in a formula I; followed by a step of preparing 3-methylquinoxaline-2-carboxylic acid from the compound of formula I. The preparation method has the advantages of short process route, simple and convenient operation, mild conditions, easily obtained raw materials, high yield and purity of the obtained product, and qualitative and quantitative analysis on the product by analysis means such as nuclear magnetic resonance, high performance liquid chromatography, gas chromatography and the like. |
| priorityDate | 2018-03-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 87.