http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2278855-C1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D409-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C7-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D405-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D207-40 |
| filingDate | 2005-02-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2006-06-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_957183aae3fbb8b28d772f77ee14dc47 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_beeae103330d5eff1adaea8fe037d909 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_09823096d700f1ad64ea7eb76fb66af4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6835664e67d5f8f657414af54ed58d80 |
| publicationDate | 2006-06-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2278855-C1 |
| titleOfInvention | Method for preparing 3,4-diaryl(hetaryl)maleimides |
| abstract | FIELD: organic chemistry, chemical technology. n SUBSTANCE: invention relates to a method for preparing 3,4-diaryl(hetaryl)maleimides of the formula (I): wherein R means (C 1 -C 4 )-alkyl or benzyl, or phenyl; R 1 means bromine atom (Br) or aryl, such as phenyl or naphthyl substituted with alkyl, alkoxy-group or halogen atom; unsubstituted hetaryl or substituted, such as thienyl-, benzothienyl-, furyl-, benzofuryl-, pyrrolyl or indolyl- wherein substitutes represent alkyl, alkoxy-, alkylthio-group, halogen atom or trifluoromethyl group; Ar means aryl, such as phenyl or naphthyl substituted with alkyl, alkoxy-group or halogen atom; unsubstituted hetaryl or substituted, such as thienyl-, benzothienyl-, furyl-, benzofuryl-, pyrrolyl or indolyl- wherein substitutes represent alkyl, alkoxy-, alkylthio-group, halogen atom or trifluoromethyl group with exception for 3,4-di-(2,5-dimethyl-3-thienyl)-1-butylmaleimide. Method involves interaction of aryl(hetaryl)boronic acid of the formula: ArB(OH) 2 wherein Ar has abovementioned values with N-substituted 3,4-dibromomaleimide of the formula (III): or N-substituted 3-bromo-4-aryl(hetaryl)maleimide of the formula (IV) wherein R and Ar have abovementioned values and with using palladium catalyst in the presence of base in organic solvent medium. Also, invention to some new derivatives of 3,4-diaryl(hetaryl)maleimides that show photochrome properties. n EFFECT: improved preparing method. n 7 cl, 2 dwg, 14 ex |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2614447-C1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114486832-A |
| priorityDate | 2005-02-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 99.