http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-737567-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_315d611c240458b1308de8455144105a |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C281-16 |
| filingDate | 1952-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_923bf6b5f705525fa33090d48afdec86 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_38eede7e258f02801c3409c49f71a28b |
| publicationDate | 1955-09-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-737567-A |
| titleOfInvention | Improvements in or relating to guanidino dithiocarbamic acids and preparation thereof |
| abstract | The invention comprises guanidino-dithiocarbamic acids of the general formula <FORM:0737567/IV (b)/1> wherein R1, R2 and R3 are the same or different and are hydrogen or alkyl groups. The acids are prepared by reacting an amino guanidine of the formula <FORM:0737567/IV (b)/2> or an acid salt thereof with carbon disulphide, preferably in the presence of a base when a salt is employed. In examples (1) aminoguanidine bicarbonate in glacial acetic acid and ethanol is refluxed with carbon disulphide, and the excess solvents removed, yielding guanidino dithiocarbamic acid (inner salt). The reaction is also carried out in the presence of anhydrous sodium carbonate or pyridine; (2) aminoguanidine hydrochloride in methanol containing sodium methoxide is refluxed, filtered, and the filtrate refluxed with carbon disulphide to yield guanidino dithiocarbamic acid (inner salt); (3) N-methyl - N - aminoguanidinium sulphate in aqueous ethanol is boiled with sodium acetate, the mixture filtered and the filtrate refluxed with carbon disulphide giving N-methylguanidino-N-dithiocarbamic acid (inner salt); (4) N1-methyl-N-aminoguanidine hydrochloride similarly yields N1 - methylguanidino - N - dithiocarbamic acid inner salt) (using potassium carbonate as a base); (5) N1-ethyl-N-aminoguanidine hydrochloride is likewise converted to N1-ethyl-guanidino-N-dithiocarbamic acid (inner salt). Specification 737,568 is referred to. |
| priorityDate | 1952-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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