| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a8f252fcab3777554424511b218d3ae0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_fec576c38e34882531ca37d6b922bf42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c53db6e809b1a98c832bceb04236f97b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_73be623f51f179e5d37cc29888b36cfa
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d2a67b3d3227b81a2ba8b0c1eb9cd416 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07B57-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-307
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07B53-00 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B53-00
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/C07C67-62
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-63
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-307 |
| filingDate |
2008-08-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3053bd81376a5c687dda96f29d9e9fea
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0e7d79f9daf788f2cca31e1752591873
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_76c8733b100d5042c14eb4df83298503
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a56233f2a2811e41127f3b63f78ee44b |
| publicationDate |
2009-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2009025169-A1 |
| titleOfInvention |
Method for purification of optically active α-fluorocarboxylic acid esters |
| abstract |
A method for purification of an optically active α-fluoro- carboxylic acid ester represented by the general formula [1] by removing fluoride ions from the ester to reduce the amount of fluoride ions contained in the ester: [Chemical formula 30] [1] [wherein R1 is alkyl having 1 to 6 carbon atoms; R2 is alkyl having 1 to 4 carbon atoms; and * represents an asymmetric carbon atom], characterized in that the ester is distilled in the presence of an organic base. According to the method, the residual fluoride ion concentration of the optically active α-fluorocarboxylic acid ester can be reduced remarkably by relatively easy operation. It is preferable that the organic base be a tertiary amine, particularly tri-n-butylamine. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2011152155-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8669382-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2012144511-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102933570-A |
| priorityDate |
2007-08-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |