| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C253-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C255-41 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C253-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C255-41 |
| filingDate |
1997-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6f6898ca56ac33b43583bd028aee04f6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2407bf98de9b858c240513ac49bfe683
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ca341c0b61e37ca429a8abf2ff1e0101
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_35c85db917c1c4daa912c66af3b2b393
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_846ff8c0960f1c7ac11d332a60850639 |
| publicationDate |
1998-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
BG-102059-A |
| titleOfInvention |
METHOD FOR PREPARING THE ESTERS OF 2-CYANO-3,3-DIARIACYLIC ACID |
| abstract |
The esters of 2-cyano-3,3-diarylacrylic acid have the formula wherein R 1 and R 2 are hydrogen, a C 1 -C 12 alkyl group, a C 1 -C 12 alkoxy group or a di- (C 1 -C 4 -alkyl) amino group and R 3 is a C 4- C18 alkyl group which may be interrupted by oxygen atoms in the ether function. By the method, benzophenoneimine of the formula is reacted with a cyanoacetic acid ester of the formula at a temperature of from 20 to 600 ° C and continuously removing from the reaction mixture the ammonia released by the reaction by means of a gas stream or by reducing the pressure to 900-100 mbar. |
| priorityDate |
1995-05-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |