http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-439380-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7b04f5b6a02051c94d6eaf190b751ed2 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C273-1863 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C273-1872 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-81 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D251-20 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C275-62 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-81 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C273-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D251-20 |
| filingDate | 1934-09-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1935-12-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-439380-A |
| titleOfInvention | Improvements in the manufacture and production of nitrogenous condensation products |
| abstract | Monoacylbiurets are manufactured by reacting allophanic acid chloride with carboxylic acid amides, e.g. formamide, acetamide, trichloracetamide, cinnamic amide, benzamide, toluic amides, chlorbenzamides, methoxybenzamides, pyridinic acid amides, quinolinic acid amides, phthalic amides, diphenylcarboxylic acid amides, urea, phenylurea, benzoylurea and urethanes. When the melting point of the amide is not too high, the reaction may be carried out by fusing the components together; in other cases inert solvents or diluents, e.g. benzene, toluene, chlorbenzenes or nitrobenzene, are employed. In some cases it is advantageous to add substances which combine with hydrogen chloride, e.g. sodium acetate or sodium, potassium, calcium or magnesium carbonate, and also metal compounds, such as copper salts, which facilitate the splitting off of hydrogen chloride but which do not cause condensation of the allophanic acid chloride with the diluent employed. The products may be converted into 4 : 6-diketo-1 : 3 : 5-triazines by splitting off water with the aid of alkaline condensing agents, e.g. caustic soda or potash solution, milk of lime, sodium alcoholate, ammonia, sodium or potassium carbonate. These triazine compounds may be employed in the pharmaceutical industry or for the preparation of dyestuffs, By the action of phosphorus pentachloride they may be converted into the corresponding dichlorides. In examples, allophanic acid chloride is reacted with: (1) benzamide in the presence of monochlorbenzene, yielding benzoylbiuret, which is treated with caustic soda solution to produce 2-phenyl-4 : 6-diketo-1 : 3 : 5-triazine; (2) p-toluic acid amide in dichlorbenzene, yielding p-toluylbiuret, which is treated with caustic potash solution to produce 2-tolyl-4 : 6-diketo-1 : 3 : 5-triazine (3) p-chlorbenzamide in monochlorbenzene, producing p-chlorbenzoylbiuret; or with other halogen substituted benzamides or methoxy- or ethoxybenzamide; (4) cinnamic acid amide in trichlorbenzene, yielding cinnamoylbiuret; (5) monophenylurea in monochlorbenzene, producing phenylallophanylurea, C6H5NHCONHCONHCONH2, or with urea or benzoylurea; (6) urethane in monochlorbenzene, yielding allophanylurethane, or with the methyl or phenyl ester of carbamic acid. Specification 436,657 is referred to. |
| priorityDate | 1934-09-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 112.