http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2372381-A1
Outgoing Links
Predicate | Object |
---|---|
assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D215-56 |
classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D215-56 |
filingDate | 2002-02-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_efe324052505f0419aa9d92b40877685 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9088a61e0565bbcf349c7523b0bfef2a |
publicationDate | 2002-08-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber | CA-2372381-A1 |
titleOfInvention | Improved process for the preparation of fluoroquinolonecarboxylic acids |
abstract | Fluoroquinolonecarboxylic acids can be prepared by hydrolysis of the corresponding C1-C4-alkyl esters with addition of water, acetic acid, and sulfuric acid using a drastically reduced amount of sulfuric acid if, relative to 1 mol of C1-C4-alkyl fluoroquinolonecarboxylate, less than 30 g of sulfuric acid are employed, the reaction mixture is heated to reflux for 0.5 to 8 hours, then a mixture of acetic acid, C1-C4-alkyl acetate, C1-C4-alkyl alcohol, and optionally water is distilled off, and finally the fluoroquinolonecarboxylic acid prepared is isolated. |
priorityDate | 2001-02-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 59.