http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1443987-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-15 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C65-11 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-15 |
| filingDate | 1973-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1976-07-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1443987-A |
| titleOfInvention | Production of 2-hyeroxynaphthalene-3-carboxylic acid |
| abstract | 1443987 Preparation of 2 - hydroxynaphthalene - 3 - carboxylic acid BASF AG 7 Dec 1973 [12 Dec 1972 2 June 1973] 56863/73 Heading C2C 2 - Hydroxynaphthalene - 3 - carboxylic acid is prepared by reaction of sodium #-naphthalate with CO 2 at elevated temperature in an organic reaction medium in two stages. In the first stage the sodium #-naphthalate is heated to at least 180‹ C. in the presence of (a) an organic compound containing at least two aromatic rings connected together via a non-aromatic carbon atom or a chain of two or more non- aromatic carbon atoms, and/or (b) an aromatic ether having at least one aromatic ring connected to an ether oxygen atom which is in turn attached to a non-aromatic carbon atom, while in the second stage the product of the first stage is reacted with CO 2 at a temperature of at least 180 degrees and the thus formed salt of 2- hydroxynaphthalene-3-carboxylic acid is converted into 2-hydroxynaphthalene-3-carboxylic acid by reaction with acid. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-1326822-C http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1506950-A1 |
| priorityDate | 1972-12-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 21.