http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10894771-B2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_caacf483b6be9ae2d2677103a70559db |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D209-80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D209-82 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D209-82 |
| filingDate | 2018-06-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-01-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c0f4e4925693aacdcc2c896125b4c54a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0bd7d1dee0b341ee6ece0c38e5624989 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2a7fc2be453d1767346917b33ece97da http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_86bb7f0164bdcb311f52cf4a037188b2 |
| publicationDate | 2021-01-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-10894771-B2 |
| titleOfInvention | Preparation method of N-substituted dibenzo[a,c]carbazole compound |
| abstract | Pharmaceutical and chemical intermediates and relevant chemicals, and relates to a novel preparation method of N-substituted dibenzo[a,c]carbazole compound. O-alkynylaniline and derivatives thereof as raw materials conduct a cascade cyclization reaction in an anhydrous organic solvent in the presence of catalysts, oxidants and additives, and are converted into the N-substituted dibenzo[a,c]carbazole compound. The preparation method of the N-substituted dibenzo[a,c]carbazole compound has fewer reaction steps, low cost of raw material, mild reaction conditions and convenient operation. Moreover, the obtained product has high yield and high purity, fully meets the quality requirements for drug intermediates, and provides favorable conditions for the industrial production. |
| priorityDate | 2018-03-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 103.