http://rdf.ncbi.nlm.nih.gov/pubchem/patent/HU-192795-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2ca2e4410855da087e11bf3eea8933fa |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D235-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D235-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61P31-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K31-4184 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61P31-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K31-415 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D235-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D235-30 |
| filingDate | 1983-04-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_91fbd84cea1eda90fdccf7ce3c769100 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ff88dbb03bb64d2d7faea001f371159e |
| publicationDate | 1987-07-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | HU-192795-B |
| titleOfInvention | Process for the elimination of 1-sulphonyl group of substituted benzimidazoles |
| abstract | This invention concerns a process for removing a sulfonyl group from the 1-position of a benzimidazole to allow conversion of 2-amino-1,5-substituted-benzimidazole compounds into 2-amino-1,6-substituted-benzimidazole compounds. The 5-isomer is reacted with an alkali metal hydroxide or carbonate in an inert aqueous organic solvent system. The reaction mixture is acidified to precipitate the base and form the intermediate benzimidazole tautomer. The intermediate is then reacted with a sulfonyl acylating agent or a haloalkyl isothiocyanate to form a mixture of 2-amino-1,5(6)-substituted-benzimidazole compounds. This invention also concerns the process for removing a sulfonyl group from the 1-position of a benzimidazole to allow conversion of 2-amino-1,6-substituted-benzimidazole compounds into 2-amino-1,5-substituted-benzimidazole compounds. |
| priorityDate | 1982-04-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 52.