Predicate |
Object |
assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_046e16bd6918ef3cd62184605b15a413 |
classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2531-821 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07B2200-07 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-2295 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-2208 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2231-645 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2531-0266 |
classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-2452 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D315-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F15-0053 |
classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D305-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F15-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D315-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B53-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 |
filingDate |
1998-06-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
grantDate |
1999-11-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_25e6ed4208e8fe738b4f9324875c43a7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d0b5db3fe92b4ef6a33ae6bc40774aca http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5ef409cd5348c31eea66f48d8a18309a |
publicationDate |
1999-11-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber |
US-5981771-A |
titleOfInvention |
Ruthenium-optically active phosphine complex, process for the preparation thereof and process for the preparation of optically active 4-methyl-2-oxetanone using same |
abstract |
The present invention provides a catalyst which exhibits a high catalytic activity and allows asymmetric reaction in a high asymmetric yield to obtain a reaction product having a high optical purity. The present invention also provides a process for the preparation of an optically active 4-methyl-2-oxetanone having a high optical purity useful as starting material of polymer in a high yield in a short period in the presence of the foregoing catalyst. A novel ruthenium-iodo-optically active phosphine complex is provided, represented by the following general formula (1):Ru-I2-(R1-BINAP)(1)wherein R1-BINAP represents an optically active tertiary phosphine represented by the following general formula (2): wherein R1 represents an aryl group which may have a substituent selected from the group consisting of a C1-4 lower alkyl group, a C1-4 lower alkoxy group, a C1-4 lower alkylamino group, and a halogen atom or a C3-8 cycloalkyl group. |
isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006258620-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7728153-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8124794-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2010173982-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008214787-A1 |
priorityDate |
1996-11-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type |
http://data.epo.org/linked-data/def/patent/Publication |