http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0426253-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a333e6344b62fb21a7c1ee592b165fca |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D317-32 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D317-72 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B57-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D317-32 |
| filingDate | 1990-10-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2304943ff1ebe1ce6a14b44f281bf2f7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8e8551eb142fe9ac19856373ef85bc41 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ac8228ef6beca7b4b334bb3700b7a415 |
| publicationDate | 1991-05-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0426253-A1 |
| titleOfInvention | Process for the separation of R and S-2,2R1, R2-1,3-dioxolane-4-carboxylic acid |
| abstract | A process is disclosed for preparing a 2,2-R₁,R₂-1,3-dioxolane-4-carboxylic acid or salt thereof rich in either the R or S enantiomer which process comprisesn a) preparing a solution which contains a non-racemic mixture of R and S enantiomer of a carboxylate of the formulan and M n+ ions, nwherein R₁ and R₂ are each, independently, H or an unsubstituted or substituted alkyl group, or R₁ and R₂, together with the carbon atom to which they are attached, form an unsubstituted or substituted carbocyclic ring, and M is an alkali metal, an alkaline earth metal, a group IIb metal, boron, or an ammonium, di- or tri-alkanolammonium ion having 2 or 3 carbon atoms or a tetra C₁-C₁₆ alkyl ammonium ion, and n is the valency of M; b) reducing the solubility of the M n+ salt of compound (I); and c) separating the resulting crystals from the mother liquor. |
| priorityDate | 1989-11-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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