http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S61271249-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2f8cfa5aee4410611b5c562275c9f8e3 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-63 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B31-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B63-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-62 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-307 |
| filingDate | 1985-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_306038699ca059b44fd725321ff6d57d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2f22c503193108a64d0799c6251ae77a |
| publicationDate | 1986-12-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S61271249-A |
| titleOfInvention | Method of purifying optically-active alpha-chlorocarboxylic acid ester |
| abstract | PURPOSE: To obtain industrially the titled compound while keeping approximately keeping optical purity, by distilling an optically active α-chlorocarboxylic acid ester by the use of a nonvolatile strong acid without racemizing it so that it is purified. n CONSTITUTION: A crude solution of an optically-active α-chlorocarboxylic acid shown by the formula (R 1 and R 2 are 1W6C alkyl) is blended with a nonvolatile strong acid such as sulfuric acid, p-toluenesulfonic acid, etc., purified by distillation, to give the optically active α-chlorocarboxylic acid ester having approximately optical purity. The amount of the acid added is sufficiently about 1W3 times the equivalent amount of a basic compound used as a reaction catalyst. A case where the method of this invention is most effectively used is a case where the basic compound is used as the catalyst for the synthesis reaction of α-chlorocarboxylic acid ester like the production of an optically-active 2- chloropropionic acid ester from the optically active lactic acid ester and thionyl chloride. n COPYRIGHT: (C)1986,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2009025169-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8748653-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2009067776-A |
| priorityDate | 1985-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 27.