| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_fd9859f29d348e8f3fd06f6088b1177d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D251-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D239-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D253-075
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D253-07 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C335-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D253-07
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D253-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D251-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C325-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D239-56 |
| filingDate |
1984-07-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1987-04-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f9fa05723ae6c3524f3eb8b808f659e2
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_796f5a0666f2c437ea8a4543113b9c92
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7ba08262a1688ea003e2feead42fdfff |
| publicationDate |
1987-04-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4659819-A |
| titleOfInvention |
Production of S-substituted isothioureas |
| abstract |
In the production of an S-substituted isothiourea including the function group ##STR1## in which R 1 is an alkyl, alkenyl, aryl or aralkyl radical, wherein a thiourea including the functional group ##STR2## is reacted with an etherifying agent to replace H by R 1 , the improvement which comprises effecting the reaction in two steps, in the first step reacting the thiourea material with an etherifying agent including the radical R n in which n R is an alkyl, alkenyl aryl or aralkyl radical different from R 1 n thereby to produce the ether ##STR3## and in the second step reacting the ether with a compound of the formula R 1 SH. The process is particularly applicable to the production of the known herbicide ##STR4## from the corresponding thiourea where in the first step methyl bromide or methyl iodide is used to form the S-methyl isothiourea which is then interchanged with ethyl mercaptan. Higher overall yields and/or economies are thereby achieved. |
| priorityDate |
1984-07-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |