http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H01146865-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4af0df9a26ff4aafde7285cbd8eb12f4 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D209-86 |
| filingDate | 1987-12-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_839e0d931745b36512c1bf8dfb64e8fe http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3df90b1ac2e7cd5d8ca53949821c85dd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0d2162a45ae75ea7a5e16f90725c8613 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_14c60f0a64fe07e617bbda23c7f14edd |
| publicationDate | 1989-06-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H01146865-A |
| titleOfInvention | Novel cyclobutenedione derivative |
| abstract | NEW MATERIAL:The cyclobutenedione derivative of formula I (R is CH 3 , C 2 H 5 , C 3 H 7 or C 4 H 9 ; X is Cl or OH). n EXAMPLE: The compound of formula II. n USE: A synthetic raw material for squarylium compound useful in the field of electrophotographic sensitive material, recording material for optical disk, solar cell and infrared-shielding filter. n PREPARATION: A compound of formula I wherein X is Cl is produced by reacting 3,4-dichloro-3-cyclobutene-1,2-dione of formula III with a carbazole derivative of formula IV in a solvent (e.g., methylene chloride) at 0W40°C, as necessary in the presence of a catalyst (e.g., boron trifluoride ethyl ether complex). The compound can be converted to another compound of formula I wherein X is OH by heating and hydrolyzing the compound e.g., in water containing acetic acid. n COPYRIGHT: (C)1989,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2008263819-A |
| priorityDate | 1987-12-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 30.