http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S5515411-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f6e960aa6ad2ba6401030159343ebe68 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-58 |
| filingDate | 1978-07-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_686c00fa0664990963c33689b0227ee3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6d0a926da590c43fc5e5169e9690cde0 |
| publicationDate | 1980-02-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S5515411-A |
| titleOfInvention | Preparation of 6, 7-dialkoxy-2-alkylchromene |
| abstract | PURPOSE: To obtain the title compound useful as a new insecticide having an anti- juvenile hormone action readily in high yield, by dehydrocyclizing the compound prepared through reaction between a 3, 4-dialkoxyphenol and a conjugated diene. n CONSTITUTION: A 3, 4-dialkoxyphenol, e.g. 3, 4-dimethoxy phenol, is reacted with a conjugated diene, preferably isoprene, in the presence of a catalyst comprising a rhodium compound, e.g. [Rh(COD)Im] 3 , and a tertiary phosphine compound, e.g. triphenylphosphine, to form a 2-(3-substituted buten-1-yl)-4, 5-dialkoxyphenol of formula II: (R 1 and R 2 are alkyl or alkenyl groups; R 3 is H, alkyl, or alkenyl group), which is dehydrocyclized by reacting with a dehydrogenating agent, e.g. a quinone such as chloranil, in a solvent, or by bringing into contact with a dehydrogenation catalyst to form the objective compound. n COPYRIGHT: (C)1980,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2733977-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S6051013-U http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0742194-A1 |
| priorityDate | 1978-07-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.