| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9fdaeef51d66d87be775fea406d475ed |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C59-84
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C57-32
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-10 |
| filingDate |
1993-03-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1995-11-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6cb7eaf636e0f30be8ce3c883f3e6365
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_71a6d6d4ce581319c09dfc3bc0e212b2
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f89c0a3b8764b34e0f6456163c89853c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_20544c6667a82232115ac64e9d988f5d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b6475b16344135e06ab6e50f4b7c6d61
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a38891b43047d609485b806bdcf883cd
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5b415bd2d52322b4c0e90c1e74d625d2
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_44379bfada124e1fcf678700d5381af4 |
| publicationDate |
1995-11-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
RU-2047592-C1 |
| titleOfInvention |
Process for preparing calcium salt of phenylpyroracemic acid |
| abstract |
FIELD: organic chemistry. SUBSTANCE: the product: pyroracemic acid of the empirical formula: C 18 H 14 O 6 Ca.. The content of impurities is 5-6% the yield is 70-75% Reagent 1: benzyl chloride. Reagent 2: carbon oxide. Reaction conditions: in the aqueous alcoholic medium at 35-45 C and at a CO pressure of 1-5 atm in the presence of calcium oxide or hydroxide and a catalyst such as a cobalt carbonyl compound at a cobalt concentration of 1.5-4.0% EFFECT: more efficient preparation process. 1 tbl |
| priorityDate |
1993-03-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |