http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005187393-A1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D311-72 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-72 |
| filingDate | 2002-10-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c6dfbe5d705cf7e2602afe298fd0b3f7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dde1ef26c534335472b9bbc7342c2924 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2a131f5b6195b29a2f4e15f1ab94da82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_aa3f2f091f2df2d1b330f4aefde54db6 |
| publicationDate | 2005-08-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2005187393-A1 |
| titleOfInvention | Manufacture of alpha-tocopherol |
| abstract | A process for the manufacture of (all-rac)-α-tocopherol comprises submitting isolated, purified phytyltrimethylhydroquinone to acid catalysis, thereby promoting ring closure to (all-rac)-α-t-tocopherol. The process can be conducted in the absence or presence of an added solvent, and when a solvent or solvent mixture is used the solvent or at least one solvent component of the solvent mixture is preferably one with a dipole moment greater than 9×10 + C-m (or 2.7 D). The nature of the catalyst is immaterial, but the catalyst is preferably sulphuric acid, phosphoric acid, a polyperfluoroalkylenesulphonic acid, a “NH-acid”, a heteropoly acid, zinc chloride, boron trifluoride, aluminium trichloride, or a mixture of any f the aforementioned Brönsted acids with any of the aforementioned Lewis acids. The product of the process is the most active an industrially most important member of the vitamin E group. |
| priorityDate | 2001-10-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 120.