http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1918293-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_bba842fc4d37dfcaced1b55bc0c91c7c |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D495-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D495-04 |
| filingDate | 2006-10-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2008-05-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-1918293-A1 |
| titleOfInvention | Process for the preparation of 6-substituted-4-oxo-thieno [2,3b]thiopyran-2-sulfonic acid |
| abstract | The present invention relates to one-pot process for the preparation of 6-substituted-4-oxo-thieno[2,3b]thiopyran-2-sulfonic acid of formula (I), which comprises, reacting 2-thienylthiol with alkenyl acid in the presence of an aromatic hydrocarbon solvent and a base, cyclization of the resulting compound and further reacting with an acid anhydride and sulfuric acid to get the desired compound of formula (I). n The compound of formula (I) is the key intermediate in the preparation of (S,S)-5,6-dihydro-4-alkyylamino-6-substituted-4H-thieno[2,3-b]thiopyran-2-sulfonamide-7,7-dioxide and analogs thereof. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2014005943-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103012386-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2015521649-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9481686-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/IT-MI20121165-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104411708-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104411708-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103012386-A |
| priorityDate | 2006-10-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 147.