| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D311-72
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J27-138 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-72
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-138 |
| filingDate |
1997-12-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0ad154f8f556ac1cbe5e02f3ccffb9ca
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_be87dbeb8b46b517a86c8da0475fe711
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_614b02700589c22120b01b6e89895398
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_71d917ef6d5ad128ed5b9652f4be747b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5c8a76d2ecb592fe28c8d046ed6aa8bd
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4ab863633224a3a33549b4f556def828
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6288c3c81c34548ec74378613cce113d |
| publicationDate |
1998-07-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-H10195066-A |
| titleOfInvention |
Method for producing α-tocopherol or α-tocopheryl acetate |
| abstract |
PROBLEM TO BE SOLVED: To react 2,3,5-trimethylhydroquinone with phytol or isophytol in the presence of a zinc halide condensation catalyst and a proton donor, and then to or without esterification with acetic anhydride. By α -To provide a method for producing tocopherol or α-tocopheryl acetate. [MEANS FOR SOLVING PROBLEMS] The reaction is carried out in a non-polar solvent which is only slightly miscible with water and B. The required zinc halide is introduced into the reaction in the form of a mixture with 1 to 4 moles of water per mole of the same. The recycling of zinc halides is possible, in which case the yield and purity of α-tocopherol are not reduced. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2004512332-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2002526489-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2003516983-A |
| priorityDate |
1996-12-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |