http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2011126760-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C253-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-065 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C231-06 |
| filingDate | 2009-10-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2013-01-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2011126760-A |
| titleOfInvention | METHOD FOR PRODUCING CARBONIC ACID AMIDE FROM CARBONYLIC COMPOUND AND HYDROCYLIC ACID |
| abstract | 1. A method for producing a carboxylic acid amide from a carbonyl compound and hydrocyanic acid, which comprises the following steps: A) reacting a carbonyl compound with hydrocyanic acid to produce hydroxycarboxylic acid nitrile, B) hydrolyzing the hydroxycarboxylic acid nitrile obtained in step A) in the presence of manganese dioxide a catalyst, moreover, for the interaction of the carbonyl compound with hydrocyanic acid in stage A), a molar excess of the carbonyl compound is used with respect to hydrocyanic acid and moreover, the reaction mixture obtained in stage A) is not subjected to distillation purification before the hydrolysis in stage B), characterized in that the reaction mixture obtained in stage B) is purified by a two-stage distillation, according to which the obtained amide carboxylic acid and water are separated from a mixture containing a carbonyl compound, nitrile hydroxycarboxylic acid and / or hydrocyanic acid, and at another stage of distillation from the obtained amide carboxylic acid separate water. 2. The method according to claim 1, characterized in that the molar ratio of carbonyl compound to hydrocyanic acid is from 1.1: 1 to 7: 1.3. The method according to claim 2, characterized in that the molar ratio of carbonyl compound to hydrocyanic acid is from 1.5: 1 to 5: 1.4. The method according to claim 1, characterized in that the carboxylic acid amide is separated from the water by multi-stage evaporation. The method according to claim 1, characterized in that in the distillation column used to separate water and hydrocyanic acid |
| priorityDate | 2008-12-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 26.