http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-102005027149-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1fa893ad762099de57d3c9c93b13d968 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C253-14 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C253-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B43-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C255-17 |
| filingDate | 2005-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a828e56fec957642dabc0dff48d072ff http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_979fc5ab3ea9ec51937d256a8e8725f0 |
| publicationDate | 2006-12-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-102005027149-A1 |
| titleOfInvention | Process for the preparation of substituted benzoyl cyanides |
| abstract | Process for the preparation of substituted benzoyl cyanides of the general formula (I), wherein R 1 , R 2 , R 3 , R 4 , R 5 independently of one another are hydrogen, chlorine, bromine, iodine, fluorine, a C 1 -C 8 -alkyl, aryl, arylalkyl, C 1 -C 8 -alkoxy or C 1 -C 4 -alkyl -C8-Alkylmercapto residue odr for -CN, -COOR 6 , -CONR 2 7 , -SO 3 R 8 , or -SO 2 NR 2 9 , wherein R 6 , R 7 , R 8 , R 9 are independently a Correspond to C1-C8-alkyl radical, by a) reaction of benzoyl chlorides of the general formula (II), in the R 1 , R 2 , R 3 , R 4 , R 5 have the same meaning as in formula I, with 0.9-1.4 molar equivalents of copper cyanide without further solvent, if appropriate under elevated pressure, under an inert gas atmosphere at a reaction temperature between 150 and 165 ° C., b) wherein after a reaction time of a maximum of 5 hours the reaction mixture after cooling to a temperature below 100 ° C, an aprotic organic solvent for precipitation of the resulting copper salt is added and c) after filtering off the precipitated copper salt, the remaining filtrate is cooled to a temperature between -40 and + 20 ° C for crystallization of the crude product and d) the crystallized crude product is separated from the aprotic organic solvent and optionally dried. |
| priorityDate | 2005-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 90.