| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e06a25c452c6c6531544245d3e2efee4 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C319-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C319-20 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C323-16 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C323-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C323-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C319-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C319-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-128
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-125
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 |
| filingDate |
1988-11-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1993-12-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_254df70ac8936c0c14f18247da53580a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_eef2e89ae9cbc6a946b7870af9d19f79
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e9dfd60e052642725a3d9f4b2798a508 |
| publicationDate |
1993-12-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-1325223-C |
| titleOfInvention |
Process for the alkythiolation of phenols and its application to the synthesis of acyl-4-alkylthio-2-phenols |
| abstract |
PRECISION OF DISCLOSURE: The invention relates to the preparation of alkylthio-phenols by reaction of a dialkyl disulfide with a phenol. In the method according to the invention, the reaction in the presence of aluminum chloride or ferric chloride in an alkyl- type solvent benzene or, only in the case of methylthiolation, in an excess of dimethyl disulfide. This process allows in particular to obtain, with selectivity and excellent yields, the 2-alkylthio phenols that you can then transform into 4-acyl-2-alkylthio phenols by reaction at a temperature ranging from 40 to 100 ° C with a BF3: 2RCOOH complex where R denotes an alkyl radical or propene-lyle, in a proportion of 10 to 15 moles of complex per mole of 2-alkylthio phenol. |
| priorityDate |
1987-11-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |