http://rdf.ncbi.nlm.nih.gov/pubchem/patent/HU-187665-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9433d383d1922b3df0ca6c182c7d3925 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-607 |
| filingDate | 1982-03-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2fd2375a7491c57ef8c1f50096db691d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f25cf90a87e05a568df7038b92cf1bb7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_94daa31a90e3661033542d5a5d2f12c3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8122ff16ace7a997703174a2825a9f3b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2c9f7f26ab4609a3a02faeeea538c26a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3ea4716eaaea7f5958fb09d9b7c2444c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d34c9f139a954291c28efd2981b1846d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bb6e0d4d9600b6d06cdbde7ca3183314 |
| publicationDate | 1986-02-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | HU-187665-B |
| titleOfInvention | New process for the preparation of 10,11-dihydro-5h-dibenzo-square bracket-a,d-square bracket closed-cycloheptadien-5-one |
| abstract | FIELD OF THE INVENTION The present invention relates to a novel process for the preparation of 10,1-dihydro-5H-dibenzo [a, d] cyclohepten-5-one of formula (I) by oxidation of isochromane of formula (III) with nitric acid and the resulting isochromanone (II) in the presence of aluminum chloride. by a Friedel-Crafts reaction, where the isochromanone / aluminum chloride molar ratio is 1: (3-5). According to the invention, the oxidation of isochroman is carried out in a continuous operation with 10-40% aqueous nitric acid, and the Friedel-Crafts reaction is carried out by adding the obtained isochromanone to the benzene suspension of aluminum chloride and, if desired, aluminum chloride 10-40%. is replaced by metal aluminum. The process of the present invention provides dibenzuberone from isochroman with a total production of about 90%. II 0 -1- |
| priorityDate | 1982-03-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 47.