| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2f8cfa5aee4410611b5c562275c9f8e3 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-52 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-017
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-157
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-52 |
| filingDate |
1999-12-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f4c70e0c2fba3cbe5dd66a113af5d99a |
| publicationDate |
2005-05-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-1067111-A4 |
| titleOfInvention |
PRODUCTION OF A HYDROQUINONE-DIESTER DERIVATIVE |
| abstract |
A process which comprises subjecting a reaction mixture containing a hydroquinone diester derivative represented by formula (1) (wherein R?1 and R2¿ are the same or different and each represents alkyl, cycloalkyl, aryl, or a heterocyclic group) to crystallisation and washing the resultant crystals. The crystallization is conducted in a solvent comprising an organic carboxylic acid and water, and the crystals are washed with warm water having a temperature of 40°C or higher. In formula (1), R?1 and R2¿ is C¿1-4? alkyl. |
| priorityDate |
1998-12-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |