http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H0439383-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ee1c19da359446fb5c4f0458a57b783d |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K9-02 |
| filingDate | 1990-06-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_250a9c2452a7ba6ed69834cd7eb96025 |
| publicationDate | 1992-02-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H0439383-A |
| titleOfInvention | Photochromic composition |
| abstract | NEW MATERIAL:A compound expressed by formula I [R 1 is trifluoromethyl; m ≥2; these rings A and B are (substituted)hydrocarbon aromatic ring or heterocyclic aromatic ring; R 1 to R 4 are H, 1-25C hydrocarbon, alkoxy, halogen, etc.]. n EXAMPLE: 1,3,3-Trimethyl-6',8'-bistrifluoromethyl-spiro[indoline--2,3'-(3H)-naphtho(2,1-b)(1,4)-oxazine]. n USE: A photochromic material. n PREPARATION: A hydroxy derivative expressed by formula II is reacted with trifluoromethyliodide in the presence of copper powder to give a fluorine- containing hydroxy derivative, which is converted into a nitroso-hydroxy derivative by NaNO 2 . Then an indonylene derivative expressed by formula III is reacted with a compound expressed by the formula R 1 X (X is SO 3 C 6 H 4 CH 2 and then reacted with the above-mentioned nitroso-hydroxy derivative to synthesize the compound expressed by formula I. n COPYRIGHT: (C)1992,JPO&Japio |
| priorityDate | 1990-06-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 20.