http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H01319432-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_95585944cd76ddfb6dc33ed2a0b84403 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-52 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C2-86 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C13-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-10 |
| filingDate | 1988-06-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_494851c6df3dbf110d91cfa7aea04ba9 |
| publicationDate | 1989-12-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H01319432-A |
| titleOfInvention | Production of 4,4'-dihydroxytetraphenylmethanes |
| abstract | PURPOSE: To easily obtain the subject substance in high yield at a low cost by mixing and reacting phenols with a reaction mixture of benzenes and benzotrichlorides in the presence of a Lewis acid catalyst and contacting the reaction product with water and a halogen-containing compound. n CONSTITUTION: Benzenes are made to react with benzotrichlorides in the presence of a Lewis catalyst (preferably AlCl 3 ) at 0-40°C to obtain diphenylchloromethanes as an intermediate, which is reacted with phenols at 80-180°C without separating the product from the reaction system. The obtained reaction product is made to contact with water to deactivate the Lewis acid catalyst and then with a halogen-containing compound (e.g., halogen-containing acids, oxyhalides, phosphorous halides and metal halides) to obtain the subject substance. The substance is useful as a raw material for engineering resin and optical disk material, an intermediate for organic synthesis, etc. n COPYRIGHT: (C)1989,JPO&Japio |
| priorityDate | 1988-06-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 26.