http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5811572-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c24684033fba97d1ad845ce453a57e3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C227-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C227-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C229-56 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C229-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C249-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C227-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C227-18 |
| filingDate | 1997-02-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1998-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_de733ac84ea216ae868cac94eeab78f8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_758387a72ec7017d21e1491856b121e3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c9a354914e439127028fe08aaf590d81 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a600a6bfdc57bb4ed157efb89a38b00e |
| publicationDate | 1998-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-5811572-A |
| titleOfInvention | Process for the preparation of N-carboxymethyleneanthranilic acid |
| abstract | Process for the preparation of N-carboxymethyleneanthranilic acid esters of the formula (3) ##STR1## by reacting a compound of the formula (1) ##STR2## in which R' is hydrogen or a straight-chain or branched alkyl radical having 1 to 4 carbon atoms and R 1 , R 2 , R 3 and R 4 are identical or different and independently of one another are hydrogen, halogen, NO 2 , a straight-chain or branched alkyl, alkoxy or halogenated alkyl radical having in each case 1 to 6 carbon atoms, with a glyoxylic acid ester of the formula (2) n n OHC--COOR (2) n n in which R is a straight-chain or branched alkyl radical having 1 to 20 carbon atoms, phenyl radical or benzyl radical, which are unsubstituted or mono- or polysubstituted by halogen or an alkyl or alkoxy group having in each case 1 to 4 carbon atoms, in the presence of a solvent at 0° to 200° C., optionally separating off the water formed during the reaction, and reducing the reaction product with hydrogen in the presence of a hydrogenation catalyst at a temperature of 0° to 200° C. under a pressure of 1 to 150 bar. |
| priorityDate | 1996-02-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 202.