http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5457247-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f8dbdfc93841b3d731fbab7ea48b412a |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07B2200-07 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C29-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C29-103 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C33-03 |
| filingDate | 1994-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1995-10-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cbcb9537d04d51db05623763e30c72d8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e90f12867727fe8465da9821b6b42368 |
| publicationDate | 1995-10-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-5457247-A |
| titleOfInvention | Process for preparing (s)- and (r) -but-3-en-2-ol and the derivatives thereof from l-or d-lactic acid esters |
| abstract | A novel process for preparing enantiomerically pure (S)- or (R)-but-3-en-2-ol compounds includes the following reaction steps: n (a) reacting an alkyl ester of D- or L-lactic acid with a hydropyran compound to obtain a lactate ester having a hydropyranyl ether group, n (b) reducing the lactate ester with an aluminum hydride at a temperature below 0° C. to obtain a propionaldehyde having a hydropyranyl ether group, n (c) reacting the propionaldehyde with an alkyl phosphonium salt to obtain a 3-butene having a hydropyranyl ether group, and n (d) cleaving the hydropyranyl ether group to prepare the enantiomerically pure (S)- or (R)- but-3-en-2-ol. |
| priorityDate | 1992-06-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 92.