http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20040008808-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5bc05651d906f43fd1543d481d54316c |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B67-006 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B11-24 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B11-28 |
| filingDate | 2002-07-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_820c351b5a29eb21d4b7362d5b37cb2d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_48cedfdae0e84e630807fe1fcc57d822 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_69d8546007f93f2852c6aa6b10efea96 |
| publicationDate | 2004-01-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-20040008808-A |
| titleOfInvention | Process for preparing Fluoran dyes |
| abstract | The present invention relates to a method for producing a fluorane-based dye represented by the following general formula (1), more particularly 2- (2-hydroxy-4-dialkylaminobenzoyl) benzoic acid represented by the following general formula (2) By reacting 2-alkyl-4-methoxyphenylamine represented by the following to synthesize the intermediate represented by the following formula (4), and reacting the intermediate under alkaline conditions to synthesize the desired fluorane dye represented by the following formula (1) In carrying out the conventional manufacturing method, it is possible to economically supply large quantities of the compounds represented by the formula (2) and formula (3) used as a raw material as a high-purity compound, and also the desired fluorine from the intermediate represented by the formula (4) The reaction conditions for synthesizing the lan-based dye may be specifically configured to increase the yield of the final target product. It is characterized by a series of preparation methods useful for commercially producing fluorane-based dyes.n n n n n n n n In the above, R 1 , R 2 and R 3 are each as defined in the detailed description of the invention. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-116621804-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-116621804-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106117239-A |
| priorityDate | 2002-07-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 78.