http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2000256222-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ca90f5c7b6142b01a9b392ce0e0a1f55 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C13-15 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C1-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C1-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C1-207 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 |
| filingDate | 1999-03-04^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bb007152508747106ae9e4b1649f2e56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_59e92d2ab6d6d523f7b36a270d92864c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7a79117f848fdd3b7c93f247a047256f |
| publicationDate | 2000-09-19^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2000256222-A |
| titleOfInvention | Process for producing alkyl-substituted cyclopentadienes |
| abstract | (57) Abstract: A process for producing an alkyl-substituted cyclopentene diene according to the present invention comprises producing an alkyl-substituted cyclopentane diene from an alkyl cyclopentenone and an alkyl clarignant reagent. A reaction mixture of an alkylcyclopentenone having a linear or branched alkyl group mono- or tri-substituted and a specific alkyl clarinal reagent is mixed with an aqueous solution containing an acidic slurry agent to form a slurry liquid, It is characterized in that an acid catalyst is added to the slurry liquid for dehydration. As the acidic slurry agent, a phosphate compound such as NaH 2 PO 4 or a mixture thereof is used. As the acid catalyst, a strongly acidic inorganic acid such as hydrochloric acid or sulfuric acid, or an organic acid such as kiodic acid is used. According to the present invention, in the post-treatment of the Grignard reaction (acidification / dehydration reaction step with an acid), the desired product is obtained without a sudden heat generation or solid precipitation that makes stirring difficult. Can be obtained in a high yield. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2013530134-A |
| priorityDate | 1999-03-04^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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