http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-19980081638-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C303-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C303-22 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-32 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C17-263 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-29 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-76 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B37-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-333 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C11D3-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C25-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C15-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B57-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C205-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C2-86 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C201-12 |
| filingDate | 1998-04-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1998-11-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-19980081638-A |
| titleOfInvention | Method for preparing distyryl-biphenyl fluorescent brightener |
| abstract | The present invention provides A) a compound of formula (3) by reacting a diazonium compound of formula (2) with ethylene in the presence of an inorganic or organic palladium compound or a mixture thereof as a catalyst precursor, B) an inorganic or organic palladium compound or a catalyst thereof as a catalyst precursor A method of preparing a compound of formula 1 is disclosed, comprising reacting 2 moles of compound of formula 3 with 1 mole of compound of formula 4 in the presence of a mixture. Compounds of formula 1 are useful as fluorescent brighteners.n n n Formula 1n n n n n n n n Formula 2n n n n n n n n Formula 3n n n n n n n n Formula 4n n n n n n n n In the above formula,n n n X and Y are independently hydrogen, halogen, NO 2 , CF 3 , CN, C 1 -C 4 alkyl, C 1 -C 4 alkoxy, COO-C 1 -C 4 alkyl, CO-C 1 -C 4 alkyl , NH- (C 1 -C 4 alkyl), N (C 1 -C 4 alkyl) 2 , NH (C 1 -C 4 alkyl-OH), N (C 1 -C 4 alkyl-OH) 2 , COOH or SO 3 H or esters or amides thereof, or COOM or SO 3 M, wherein M is Na, K, Ca, Mg, ammonium, mono-, di-, tri or tetra-C 1 -C 4 alkylammonium, mono- , Di- or tri-hydroxyalkylammonium, or ammonium substituted 2-3 by a mixture of C 1 -C 4 alkyl and C 1 -C 4 hydroxyalkyl group),n n n Z is hydrogen, C 1 -C 4 alkyl, C 1 -C 4 alkoxy, CF 3 , halogen (F, Cl, Br, I), SO 3 H or SO 3 M, where M has the above meaning ego,n n n n is 1 to 2,n n n G is a counter ion,n n n Each R 1 is the same and is a bromine or iodine atom. |
| priorityDate | 1997-04-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 285.