http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-735070-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ab7027aadfa4e4c309ad38944b30e8f3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C335-32 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C335-32 |
| filingDate | 1952-12-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1955-08-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-735070-A |
| titleOfInvention | Improvements relating to s-thiuronium alkanesulphonates and the preparation thereof |
| abstract | The invention comprises S-thiuronium alkane sulphonates having the general formula <FORM:0735070/IV (b)/1> where n is a number from 1 to 5 which are prepared by reacting thiourea with a haloalkane sulphonate X-(CH2)nSO3M1, where n is as defined above, X is a halogen, preferably chlorine or bromine, and M is a metal which forms a water-soluble sulphite. Generally, the reactants are used in equimolar proportions in an inert reaction medium at elevated temperatures up to the boiling point of the medium. The halo-alkanesulphonates are prepared by reacting a dihalo alkane X(CH2)nX with a stoichiometric amount of a sulphite of the metal M, e.g. an alkali metal or ammonium sulphite or a meta-bisulphite of the metal in conjunction with a molar proportion of the hydroxide of the metal. In examples: (1) ethylene dibromide and sodium sulphite are heated under reflux in aqueous ethanol and the resulting mixture is worked up to recover sodium beta-bromoethane sulphonate mixed with sodium bromide which are reacted with aqueous thiourea yielding beta-S-thiouronium ethane sulphonate; (2) as in (1), the bromo ethane sulphonate mixture being obtained as a liquid concentrate for reaction with thiourea; (3) as in 2 using, however, ethylene dichloride and potassium sulphite as starting materials. |
| priorityDate | 1951-12-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 46.