http://rdf.ncbi.nlm.nih.gov/pubchem/patent/SU-1544774-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8496e755d1ad2d69e34648ecf750238e |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D323-00 |
| filingDate | 1987-10-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1990-02-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9dd9d337195f4401cb04b1740a46bf4b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bf2ec422faba435f5cab5bc73ec85c69 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_71729443e20ea47934bd4eb47fa4c8bf http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_01a54e51a68ce204442ca781cd1f83ad http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f05da17f76700a17bac89796895a178a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_572500252aec2649fc4a21d45e3e94ff |
| publicationDate | 1990-02-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | SU-1544774-A1 |
| titleOfInvention | Method of producing mononitrobenzocrown esters |
| abstract | The invention relates to microcyclic heterocyclic compounds, in particular the preparation of mononitrobenzocrown ethers, which find use as complexones and ionophores. The goal is to simplify the process and increase the yield of nitrobenzocrown ethers. The synthesis is carried out by the reaction of benzo-18-crown-6 or benzo-15-crown-5 with nitric acid at a molar ratio = 1: 1.5 in the presence of acetonitrile, which is taken in an amount of 40-50% by weight of crown ether, with 60-80 ° C. These conditions allow to obtain pure target substances with a better yield (up to 99%) than in the known method, while reducing the duration of the process from 12 hours to 5-10 minutes and improving safety. In addition, the technology for isolating target substances is simplified. 3 tab. |
| priorityDate | 1987-10-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 30.