http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-835186-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A01N57-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-1651 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-165 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A01N57-12 |
| filingDate | 1958-06-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1960-05-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-835186-A |
| titleOfInvention | Thiophosphoric acid esters |
| abstract | The invention comprises thiophosphoric acid esters of the formula <FORM:0835186/IV (b)/1> wherein R1 is C1-C4 alkyl, R is C1-C4 alkyl which may be unsubstituted or substituted and X is O or S. The substituents in the group R may be alkylmercapto, alkoxy, or cyano groups or halogen atoms. The products may be obtained by reacting an a -halogeno-b -trichloroethyl alkyl ether of the formula Cl3CCH(Hal) (OR) in which Hal is halogen and R is as defined above with an appropriate O,O-dialkylthiol - (or thionothiol) - phosphoric acid. The latter may advantageously be used in the form of their ammonium or alkali metal salts and the reaction may be effected in a suitable solvent e.g. an alcohol, ketone, or hydrocarbon at 50-120 DEG C. The a -halogeno-b -trichlorethyl alkyl ether may be obtained by adding chloral to an alcohol (ROH) to form a semiacetal of the formula Cl3C.CH(OH)(R) and then replacing the hydroxy group by a halogen atom, e.g. by means of phosphorus pentachloride, thus the compound Cl3C.CH(Cl) (OCH2CH2SC2H5) which is used as starting material in one of the examples given may be obtained by condensing chloral with b -ethyl-mercapto ethanol and chlorinating the resulting semi-acetal with phosphorus pentachloride. The thiophosphoric acid ester products have good insecticidal properties (see Group VI).ALSO:An insecticidal composition comprises a solid or liquid carrier or diluent and one or more thiophosphoric acid esters of the general formula <FORM:0835186/VI/1> wherein each R1 is a C1-C4 alkyl radical, R is a C1-C4 alkyl radical which may be unsubstituted or substituted, e.g. by an alkylmercapto, alkoxy or cyano group or halogen atom, and X is oxygen or sulphur (see Group IV (b)). Specified carriers or diluents are talc, chalk, bentonite, clay, water-if necessary with a commercial emulsifier, e.g. a benzyl hydroxy diphenyl polyglycol ether containing 10 to 15 glycol residues, alcohols, ketones, hydrocarbons and dimethyl formamide which is mentioned as an auxiliary solvent. Known insecticides and/or fertilizers may also be present. |
| priorityDate | 1956-07-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.