| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_25da4406ee4bf57860b79bd5d61b4469 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B57-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-487
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C59-01
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-00 |
| filingDate |
1988-01-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_66ddb895244676f50d3c58390a1feb60
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6e4454b0b8d27c6f97e2d527f6a1aa8c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_74de38ab4b9f45daf60fe043adb880db |
| publicationDate |
1989-07-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-H01175956-A |
| titleOfInvention |
Purification of optically pure 3-hydroxy acids |
| abstract |
PURPOSE: To purify an acid of short carbon chain effectively and inexpensively without using an expensive resolving agent and to obtain the title compound useful as a raw material for compounds such as agricultural chemicals in high purity, by changing a 3-hydroxy acid into a dibenzylamine salt and recrystallizing the salt in an organic solvent. n CONSTITUTION: Dibenzylamine is added to a 3-hydroxy acid having 60W85% optical purity to give dibenzylamine salt [(R*- or (S*-2]. The prepared salt is dissolved in an organic solvent such as acetonitrile or ethyl acetate, cooled and recrystallized to give optically active pure dibenzylamine salt of a (R)- or (S)-hydroxy acid. The salt is treated with an acid to give the aimed optically pure compound. n COPYRIGHT: (C)1989,JPO&Japio |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9682913-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-5734533-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0881293-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2006519786-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2011173912-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-02092570-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2005047803-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2014157607-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9854329-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110862316-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105102415-A |
| priorityDate |
1988-01-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |