| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b09f893b262cefd50c5e76c4b85d1c0a |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07B2200-07 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-31
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-30 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B57-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B53-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-31
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J37-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-675
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-24 |
| filingDate |
2013-02-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f79b20821cda6247e50edef2edd19266
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a91273f45edae527f0b1fee6eaae6a98 |
| publicationDate |
2013-07-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-2013144685-A |
| titleOfInvention |
Method for preparing (S)-or (R) -4-halo-3-dihydroxybutyric acid ester |
| abstract |
A process for the preparation of enantiomerically pure (S)-or (R) -4-halo-3-hydroxybutyric acid esters. Asymmetric hydrogenation of 4-halo-3-oxobutyric acid ester in the presence of a ruthenium complex catalyst containing a chiral ligand results in 4-halo-3-hydroxybutyric acid ester (wherein R 1 Is CH 2 X, CHX 2 or CX 3 , X independently represents Cl and / or Br, and R 2 is C 1-6 -alkyl, C 3-8 -cycloalkyl, aryl , Wherein each aryl or aralkyl is optionally further substituted with one or more C 1-4 -alkyl groups and / or halogen atoms. [Selection figure] None |
| priorityDate |
2003-10-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |