http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9202485-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5fbf39a86486fafc6b3fc5a710c549b3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C201-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C201-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C205-57 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C205-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C205-59 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C205-58 |
| filingDate | 1991-07-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2d9819bd108ed9cb13604e6ae766e646 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fe9f0cf2f187865411875ff478977431 |
| publicationDate | 1992-02-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-9202485-A1 |
| titleOfInvention | Method for obtaining 2-nitrobenzaldehide derivatives and nitrobenzoic acid derivatives |
| abstract | Method for obtaining 2-nitrobenzaldehide derivatives and nitrobenzoc acid derivatives having the formula (Ia?) (III) respectively, wherein R is H, C1-4? alkyl, C1-4? alkoxy or halogen. The method is comprised of selectively oxidizing a mixture of nitrobenzaldehide derivatives (I) with an aqueous solution of an oxidizing agent (II) wherein X is halogen, M is an alkaline or alkaline-earth metal and n is 1 or 2. Through said oxidation, 3-nitrobenzaldehide derivatives essentially are oxidized. 2-nitrobenzaldehide derivatives (Ia?) not oxidized may be removed through the use of a water-unmiscible solvent and the nitrobenzoc acid derivatives (III) may be precipitated in the aqueous phase by pH regulation. In a preferred mode of execution, 2-nitrobenzaldehide is of pharmaceutical interest as coronary dilator and 3-nitrobenzoc acid is of interest in the industry of dyes and in medicine as synthesis intermediary. |
| priorityDate | 1990-07-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 39.