http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1290943-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D233-72 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D233-72 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D233-76 |
| filingDate | 1970-02-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1972-09-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1290943-A |
| abstract | 1290943 5-(3-Cyanopropyl)-hydantoin preparation STAMICARBON NV 23 Feb 1970 [6 March 1969] 8593/70 Heading C2C 5-(3-Cyanopropyl)-hydantoin is prepared by reacting in the liquid phase 4-cyanobutyraldehyde with a cyanide reactant, a carbon dioxide reactant and an ammonium reactant, the number mols of ammonium reactant present during the reaction being at least 2 more than twice the number mols carbon dioxide reactant present and at least 2 mols of ammonium reactant being used in the form of ammonia and/or ammonium hydroxide. It is preferred to effect the reaction in an aqueous medium at 30 to 90 C. using a number mols ammonium reactant 4-15 higher than twice the number mols CO 2 reactant, 4-15 mols of ammonia and/or ammonium hydroxide being employed. The cyanide reactant may be HCN or a salt, e.g. NaCN, KCN or NH 4 CN. The ammonium reactant may be a salt, e.g. NH 4 Cl, NH 4 CN, in addition to NH3 and/or NH 4 OH. The carbon dioxide reactant may be the free gas or a carbonate, bicarbonate or carbamate, e.g. (NH 4 ) 2 CO 3 ; thus two reactants may be provided by one salt. |
| priorityDate | 1969-03-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.