http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5266693-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a333e6344b62fb21a7c1ee592b165fca |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D499-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D499-00 |
| filingDate | 1992-05-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1993-11-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8287e73549d769a586ce9193621e87bc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b83a308a8586e2e0dc25b0ed674a9992 |
| publicationDate | 1993-11-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-5266693-A |
| titleOfInvention | 6-diazo-penicillanic acid 1,1-dioxide derivatives |
| abstract | A process for the preparation of at least one compound of a formula selected from the group consisting of <IMAGE> I and <IMAGE> II and their salts and esters wherein X is selected from the group consisting of hydrogen and a substituent such as halogen and acetoxy comprising diazotizing a compound of the formula <IMAGE> III and salts and esters thereof wherein X has the above definition and brominating the resulting diazotized compound with at least an equimolar amount of a nitrosating agent in the presence of 1 to 5 equivalents of a strong acid in solution or suspension in a mixture of water and an at least partially water-miscible organic solvent with the amount of water being 1 to 20% by volume containing at least equimolar amounts of hydrogen bromide and bromine which bromo compounds are useful intermediates for the preparation of penicillanic acid-1,1-dioxide and its derivatives and novel 6-diazo-intermediates. |
| priorityDate | 1982-04-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 385.