http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0471805-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_966a6c1f382ec9bcb5e3839dfd73e5b8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-65515 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-655 |
| filingDate | 1991-03-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1995-08-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7a089994e008be9ef3c43f89d3368780 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fd5f12f74a2fd6727dd4eb228aa40aa4 |
| publicationDate | 1995-08-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0471805-B1 |
| titleOfInvention | Method for preparing derivatives of ascorbic acid |
| abstract | PCT No. PCT/CH91/00049 Sec. 371 Date Oct. 25, 1991 Sec. 102(e) Date Oct. 25, 1991 PCT Filed Mar. 1, 1991 PCT Pub. No. WO91/13895 PCT Pub. Date Sep. 19, 1991.The invention is concerned with a process for the manufacture of ascorbyl phosphates, namely of phosphates of the formula <IMAGE> I wherein Mk(+) denotes a cation, k(+) denotes the valency and m denotes the equivalents, with the proviso that the product from k.m=3, by phsophorylating ascorbic acid. k is 1 to 3, especially 1 or 2. The process comprises using pre-formed sodium (or potassium) dichlorophosphate as the phosphorylating reagent, adding ascorbic acid to this pre-formed phosphorylating reagent in aqueous solution, especially at pH values between about 11.0 and about 13.0, in the presence of a water-soluble trialkylamine as the catalyst and at temperatures between about +10 DEG C. and about -8 DEG C., especially at temperatures below 0 DEG C., and, if desired, trans-salting the I which is obtained as the sodium (or potassium) salt and/or, if desired, purifying via an amine salt. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-1083845-C |
| priorityDate | 1990-03-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 36.