http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20010049732-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_966a6c1f382ec9bcb5e3839dfd73e5b8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-53 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-5054 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-5329 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B55-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-53 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-50 |
| filingDate | 2000-07-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fc8db424db21dec0d763a3320d77d2d3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8f1fad9ddb1dfc80418a4b9235e5574d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6bea5035f44879b75d25e261dd429d9a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1be63753fd90b01a30319a096b7fbce2 |
| publicationDate | 2001-06-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-20010049732-A |
| titleOfInvention | Process for the racemization of atropisomeric bis(phosphine oxide) compounds |
| abstract | The present invention relates to the atropisomer bis of formula (1) in (S) form or (R) form or non-racemic form for preparing an optically active bisphosphine ligand capable of reacting with a transition metal to form an optically active complex. A novel method of racemization of (phosphine oxide) compounds is:n n n n n n n n n n Wheren n n R 1 is C 1 to C 8 alkoxy and R 2 is hydrogen, C 1 to C 8 alkyl or C 1 to C 8 alkoxy, or R 1 and R 2 together represent methylenedioxy or ethylenedioxy Forming;n n n R 3 is hydrogen, C 1 to C 8 alkyl or C 1 to C 8 alkoxy;n n n R 4 is phenyl or substituted phenyl.n n n The complex is used as a catalyst in many asymmetric reactions.n n n The racemization reaction is a heating reaction and is carried out in a high boiling point solvent or a low boiling point solvent at a normal pressure or elevated pressure of 1 × 10 5 to 3.5 × 10 7 Pa. The heating process is carried out by heating in a reaction system (such as a reactor, an autoclave, an aluminum block, or a round bottom flask equipped with a heating / stirring mantle) which can be heated to 400 ° C. or lower, or irradiating microwaves, preferably 260 to 400 ° C., preferably 280 Batch or continuous in the solvent or in the melt at a temperature of from -380 ° C. |
| priorityDate | 1999-07-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 42.