http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1108926-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_24aca9ded2638ea793d05360dde7a4a0 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D233-76 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D233-76 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D233-72 |
| filingDate | 1965-12-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1968-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1108926-A |
| titleOfInvention | Method for producing 5-ª‰-methylmercaptoethylhydantoin |
| abstract | 5-b -Methylmercaptoethylhydantoin which has the formula <FORM:1108926/C2/1> is obtained by reacting together (a) carbon dioxide and ammonia, ammonium bicarbonate or ammonium carbonate, (b) hydrocyanic acid or its salts, and (c) b -methylmercaptopropionaldehyde in the presence of (1) a preformed aqueous solution, termed the "solubilized liquid" obtained by dissolving b -methylmercaptopropionaldehyde in a solution termed the starting aqueous solution in which (a) and (b) are dissolved and/or (2) a preformed aqueous solution termed the "hydantoin liquid" obtained by reacting (a), (b) and (c) in the said "solubilized liquid" to form 5-b -methylmercaptoethylhydantoin. The "solubilized liquid" may be obtained by heating a suspension of b -methylmercaptopropionaldehyde in the starting aqueous solution at 80 DEG C. for 30 minutes and at 100 DEG C. for 20 minutes and the "hydantoin liquid" may be obtained by maintaining the solubilized liquid under conditions ranging from allowing it to stand overnight at room temperature to heating it at 200 DEG C. for 5 minutes. The reaction may be carried out by dissolving b -methylmercaptopropionaldehyde in a mixture of the "solubilized liquid" and/or the "hydantoin liquid" and the starting aqueous solution at a temperature between room temperature and 100 DEG C. and maintaining the solution under conditions ranging from allowing the mixture to stand over-night at room temperature to heating at 200 DEG C. for 5 minutes in the reaction mixture. The process may be carried out in a continuous manner by feeding (a) and (b) together with part of a recycled "solubilized liquid" and/or "hydantoin liquid" to a reaction zone and feeding the solubilized liquid so produced to another reaction zone. The invention also comprises a continuous process for the production of 5-b -methylmercaptoethylhydantoin in which (a) and (b) and (c) are fed to a reaction zone and mixed in water at a temperature between room temperature and 100 DEG C. to form a homogeneous liquid ("solubilized liquid") which is introduced into another reaction zone and maintained at a temperature between room temperature and 200 DEG C. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2020120720-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2013159741-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102659684-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102659684-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2018114640-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5770769-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5990349-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3339289-A1 |
| priorityDate | 1965-01-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.