http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H032274-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_03d0f52bb4069f8a19d70dcfb697c67a |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D493-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B11-28 |
| filingDate | 1989-05-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3b4e36cd8db18de1dbe3dc7a249a8852 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cd8cf4c25025a1d440782ac97dba991b |
| publicationDate | 1991-01-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H032274-A |
| titleOfInvention | Production of fluoran compound |
| abstract | PURPOSE: To obtain the title compound useful as an electron-donating colorless dye by treating with a hydrogen halide a fluoran compound having ether linkage in its substituent. n CONSTITUTION: The objective compound can be obtained by treating with a hydrogen halide (pref. aqueous solution of hydrogen bromide) a flnoran compound having ether linkage in its substituent [pref. a compound of formula I or II (R 1 and R 4 are each alkyl, alkenyl, alkynyl, aryl or H; R 2 ls alkyl halide; R 3 is alkyl, alkenyl, alkynyl, aryl, H, halogen, substituted amino, alkoxy, etc.; R 5 is ether linkage-carrying alkyl; ring A is aromatic ring which may contain heteroatom)]. The amount of said hydrogen halide to be used is pref. such as to be 2.0-100.0 in the molar ratio to said fluoran compound. n COPYRIGHT: (C)1991,JPO&Japio |
| priorityDate | 1989-05-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 19.