http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H0296574-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_06c6934469fa7eb7bb42e31b7ca00e77 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-10 |
| filingDate | 1988-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d42a5a1f98a6147b1603a3ded9fa1a7d |
| publicationDate | 1990-04-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H0296574-A |
| titleOfInvention | Production of coumarin |
| abstract | PURPOSE: To readily produce a coumarin useful as a perfume, food flavor, metal surface-treating agent for plating operations, etc., in a good yield with simple device and process by reacting dihydrocoumarin as a raw material with sulfur and a desulfurizing agent. n CONSTITUTION: Dihydrocoumarin prepared by catalytically cyclizing and dehydrogenating 3-(2-cyclohexanoyl)propionic acid or an ester thereof catalytically hydrogenating hexahydrocoumarin is reacted with preferably the same chemical amount or, if desired, a little excess amount of sulfur and subsequently with a desulfurizing agent such as Raney nickel developed in a solvent such as phenyl ether at ≥200°C, preferably 240-280°C, to provide the coumarin of formula II. n COPYRIGHT: (C)1990,JPO&Japio |
| priorityDate | 1988-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 32.