http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-834354-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/C07F9-4006 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-091 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-1651 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21F3-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E04B2-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-165 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-09 |
| filingDate | 1957-11-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1960-05-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-834354-A |
| titleOfInvention | Esters of thiophosphoric acids containing sulphoxide groups |
| abstract | The invention comprises thiophosphoric acid esters of the general formula <FORM:0834354/IV (b)/1> wherein R1 is a C1-C4 alkyl radical, or halogen, e.g. chlorine or bromine, R2 is a C1-C4 alkylene radical, X is oxygen or sulphur, at least one X being sulphur, and R3 and R4 are C1-C4 alkyl radicals. They may be obtained by oxidizing the corresponding sulphides of the formula <FORM:0834354/IV (b)/2> with hydrogen peroxide in the presence of a water-miscible inert organic solvent or with nitric acid. The reaction using hydrogen peroxide should generally be carried out at slightly elevated temperature, e.g. up to 50 DEG C. and preferred solvents are formic, acetic, propionic and butyric acids. Examples are given for the production of the following compounds: (1) p.Cl.C6H4.SO.CH2S.P(O)(OC2H5) 2, (2) p.CH3. C6H4SO.CH2SP(O)(OC2H5)2, (3) p.CH3.C6H4. SO.CH2CH2SP(S)(OC2H5)2, and (4) p.CH3C6 H4SO.CH2SP(S)(OC2H5)2. The products have good pesticidal properties (see Group VI). The sulphide-group-containing starting materials of the above formula may be obtained either by (a) reacting alkarylmercaptoalkyl halides with salts of thions or dithiophosphoric acid diesters, (b) reacting alkarylmercaptoalkyl mercaptans with the appropriate phosphoric- or thio-phosphoric acid diester halides, or (c) reacting alkarylmercaptoalkanols with thiophosphoric acid diester halides, the products thus obtained being thiono- or dithio compounds in (a), thiols or dithio compounds in (b), and thiono compounds in (c).ALSO:An insecticidal composition comprises a thiophosphoric acid ester of the general formula <FORM:0834354/VI/1> wherein R1 is a C1-C4 alkyl radical, or halogen, e.g. chlorine or bromine, R2 is a C1-C4 alkylene radical, X is oxygen or sulphur, at least one X being sulphur, and R3 and R4 are C1-C4 alkyl radicals (see Group IV (b)) and a solid or liquid carrier. Specified carriers are chalk, talc, bentonite, water, alcohols and liquid hydrocarbons. Known pesticides may also be present. A suitable composition is obtained by dissolving the compound p.CH3.C6H4.SO.CH2. SP(S)(OC2H5)2 in dimethyl formamide, adding benzylhydroxydiphenyl polyglycol ether as emulsifier and then diluting with water. |
| priorityDate | 1954-11-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 55.