http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2323966-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8e0bf0928b608797b70bbc2b91c7e52e |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-582 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C39-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C41-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C43-225 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C211-52 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C43-225 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C41-22 |
| filingDate | 2009-07-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ac38a914753390eb6253a5205754baa0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f5446364ff018efe2264b4a5fa220d80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a983ae4eba77151c66360f479f7ca163 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5c75af94aa23e3bbe483e2eeb9de2718 |
| publicationDate | 2011-05-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-2323966-A1 |
| titleOfInvention | Process for the preparation of 4-bromophenyl derivatives |
| abstract | Disclosed is a process for the preparation of a mixture of 4-bromophenyl derivatives (compound of formula (2)) and 2,4-dibromophenyl derivatives (compound of formula (3)) comprising the steps of [1] reacting in a two-phase (liquid-liquid) system a bromide containing source with a phenyl derivative (formula (1)) in the presence of an excess of an oxidizing agent, an acid, and optionally a catalyst selected from vanadium pentoxide and ammonium heptamolybdate forming 4-bromo- (compound of formula (2)) and 2,4-dibromo derivatives (compound of formula (3)) and as intermediate product the 2-bromo derivative (compound of formula (4)) which reacts in step [2] to the 2,4-dibromo derivative (formula (3)) according to the following reaction scheme 2 wherein R 1 is hydroxy; C 1 -C 5 alkoxy; or -NR 2 R 3 ; and R 2 and R 3 independently from each other are hydrogen; or C 1 -C 5 alkyl. |
| priorityDate | 2008-08-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 140.