| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_afea2aa6f1f892c1456cf7d7a8bc0242 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2527-1206 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2-867
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C15-46
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C4-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C1-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C15-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C4-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C15-46
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C2-86
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C4-00 |
| filingDate |
1987-07-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_eeef4ca20a1526bb694576ecd11bff0e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_80cf44d03a3e55c9ceb800e4023451fc |
| publicationDate |
1989-01-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-S6426524-A |
| titleOfInvention |
Production of alkylstyrene |
| abstract |
PURPOSE:To obtain the titled substance, by reacting a monoalkylbenzene having an alkyl side chain with a specific number of more of carbon atoms with acetaldehyde in the presence of an HF catalyst and catalytically decomposing the resultant 1,1-bis(p-alkylphenyl)ethane. CONSTITUTION:A monoalkylbenzene having a >=3C alkyl side chain (e.g. isobutylbenzene) is reacted with acetaldehyde at 2-50:1 molar ratio in the presence of an HF catalyst (at 1.7-300 molar ratio to the acetaldehyde) at <=40 deg.C to provide a 1,1-bis(p-alkylphenyl)ethane (A), which is then catalytically decomposed in the presence of an acid catalyst at 200-650 deg.C to afford the aimed alkylstyrene (e.g. p-isobutylstyrene). Since the compound (A) which is an intermediate can be produced at a low cost to readily recover and reuse Hf by distillation, catalyst cost is low and p-regioselectivity of the compound (A) is excellent. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5237858-A |
| priorityDate |
1987-07-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |