http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109689653-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07B2200-13 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D471-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D471-14 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D471-04 |
| filingDate | 2017-09-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-04-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-04-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109689653-B |
| titleOfInvention | Process for the preparation of 2-(6-nitropyridin-3-yl)-9H-dipyrido[2,3-b;3',4'-d]pyrrole |
| abstract | The present invention relates to a process for the preparation of a compound of formula I comprising: a) combining a compound of formula 2 with a suitable boric acid, trifluoroborate or borate under argon and in the presence of a catalyst and base Coupling in the presence of a suitable solvent followed by isolation of the product as an acid addition salt to provide a compound of formula Ia wherein the leaving group O-SO2 - R in said formula 2 is selected from trifluoromethanesulfonic acid ester group, tosylate group, mesylate group, benzenesulfonate group, o-nitrobenzenesulfonate group or p-bromobenzenesulfonate group; and b) by using Treatment with at least a stoichiometric equivalent of a suitable base converts an acid addition salt of formula Ia to a compound of formula I, where the acid HX of formula Ia includes a suitable organic or inorganic acid. |
| priorityDate | 2016-09-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 135.