http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2198875-C2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1b9ee23875eb359241b1ca032e8aa76f |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-55 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-73 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-61 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-64 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-61 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-64 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-75 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-74 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-73 |
| filingDate | 1998-05-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2003-02-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e9e86e8f0d73217da6b2545658f01ae2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_de46ca13834d9e1ac99eb11d57b09cfc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5cadbc7e37517052e48d66f97c32b7da http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c335c780d211d5fbe2a0a96a8c8696c6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_81271a6d1bfb3610ca709b499df8062b |
| publicationDate | 2003-02-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2198875-C2 |
| titleOfInvention | Methods of synthesis of pyridine-2-carboxaldehyde thiosemicarbazones and intermediate pyridine-2-carboxaldehydes |
| abstract | FIELD: organic chemistry, chemical technology. SUBSTANCE: invention relates to the improved method of synthesis of compounds of the formula (I) where R 4 means H or CH 3 involving interaction of compound of the formula (2-C) where R 1 means group NO 2 with thiosemicarbazide to yield thiosemicarbazone of the formula (TS1) followed by reduction of synthesized compound. Invention proposes also method of synthesis of thiosemicarbazone of the formula (TS2) involving interaction of compound of the formula (2-C) where R 1 means group NHP with thiosemicarbazide. Invention proposes also methods of synthesis of intermediate compounds of the formula (2-C) where R 1 means NO 2 ,NH 2 , NHP, NPP, N 3 or CO 2 R 2 ; P and P mean protective groups; R 2 means C 1 -C 3 -alkyl; R 4 means H or CH 3/ and compounds of the formula (4) . Proposed methods of synthesis of pyridine-2-carboxaldehyde thiosemi-carbazones allows to increase the yield of end compounds up to 30% from easily available substances. EFFECT: improved methods of synthesis, increased yield. 21 cl, 3 dwg, 1 tbl |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/MD-3995-C2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/MD-4126-C1 |
| priorityDate | 1997-05-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 308.