http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H02286693-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-65515 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-655 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-09 |
| filingDate | 1990-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9831665cf429cd40bfcb8f94782883c2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4abcaff0db8e2fd473f240ddaf66c631 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2cc4298f86e01d3568d42016ada9642f |
| publicationDate | 1990-11-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H02286693-A |
| titleOfInvention | Production of ascorbic acid-2-phosphonate and production of potassium magnesium l-ascorbate-2-phosphatem k1+-0.3 mg1+-0.15-l-ascorbate-2-phosphate and 5,6-isopropylidene-ascorbic acid |
| abstract | PURPOSE: To obtain the subject compd. in an industrially advantageous manner by reacting ascorbic acid with POCl 3 in the presence of a tertiary amine and applying specific treatment to the reaction mixture to simply remove free phosphoric acid and phosphate in the reaction mixture. n CONSTITUTION: At first, an ascorbic acid deriv. having an atomic group represented by formula I (wherein R 1 and R 2 are each H or combined together to form groups represented by formulae II, III) is reacted with POCl 3 in the presence of a tertiary amine in an aq. solvent at -10 to 25°C while KOH is added during the entire phosphorylation reaction to hold pH to 8-13.5. Subsequently, a stoichiometric amt. of an Mg compd. is directly added to the reaction mixture without preliminarily performing ion exchange treatment until the formation of crystalline KMgPO 4 is completed at a pH of 7 in order to separate excessive inorg. phosphate. Finally, crystallized KMgPO 4 is separated from the reaction mixture and the objective compd. is isolated from the filtrate. n COPYRIGHT: (C)1990,JPO |
| priorityDate | 1989-03-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 24.