http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009176998-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c6dfbe5d705cf7e2602afe298fd0b3f7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e46723f11115161d538cd9dfd825ae71 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a16b2c6c43ea49cc157d3ab8f08688b7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1069245fa6846feee59224a5b8eac1cc |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61P3-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D311-72 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D311-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C37-11 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-74 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-72 |
| filingDate | 2009-03-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_277383c00adc9b58c00af839092c5acf http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_53003b406d2b270547b88442f1dd0cff http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ec64a08e2d05477d553754c88fea0b14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d7cafd29e29786254e9d991d1eb6e658 |
| publicationDate | 2009-07-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2009176998-A1 |
| titleOfInvention | Process for the manufacture of chroman derivatives, especially alpha-tocopherol and alka-noates thereof |
| abstract | The present invention relates to novel processes for the manufacture of chroman derivatives such as α-tocopherol (TCP) and alkanoates thereof, especially α-tocopheryl acetate (TCPA), whereby at least one step of the processes is carried out in the presence of a Lewis acid or a mixture of a Lewis acid with a Bronsted acid as the catalyst under pressure, preferably at an absolute pressure of at least 1.1 bar. n As starting materials for the manufacture of TCP and its alkanoates either a mixture of 2,3,5-trimethylhydroquinone (TMHQ) or 2,3,6-trimethylhydroquinone-1-alkanoate (TMHQA) and a compound selected from the group consisting of phytol (PH), isophytol (IP) and (iso)phytol derivatives or 2-phytyl-3,5,6-trimethyl-hydroquinone (PTMHQ)/3-phytyl-2,5,6-trimethylhydroquinone-1-alkanoate (PTMHQA) and/or an isomer thereof are used. n Suitable Lewis acids are indium(III) salts and scandium(III) salts. Suitable acid mixtures are iron/iron(II) chloride/hydrogen chloride and zinc(II) chloride/hydrogen chloride. |
| priorityDate | 2004-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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