http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1259020-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D215-26 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D215-26 |
| filingDate | 1969-05-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1972-01-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1259020-A |
| abstract | 1,259,020. 2,4 - Dihydroxyquinolines. BADISCHE ANILIN- & SODA-FABRIK A.G. 21 May, 1969 [22 May, 1968], No. 25811/69. Heading C2C. Compounds of formula where R is H or an electron-attracting group (e.g. acyl, nitro, alkylsulphonyl or cyano), R<SP>1</SP> is H or alkali metal, X is H, halogen, NO 2 , alkyl, optionally substituted phenyl and Y is H, halogen or alkyl, or X and Y may form part of a condensed unsaturated ring system, are prepared by reacting benzoxazinones of formula with a strong base. Examples prepare 2,4- dihydroxyquinoline and its Na salt, 3-acetyl- 2,4 - dihydroxyquinoline, 3 - acetyl - 7 - nitro- 2,4 - dihydroxyquinoline and 6,8 - dichloro- 2,4 - dihydroxy - 3 - acetylquinoline. Starting material benzoxazinones prepared are 2 - acetonyl -, 2 - acetonyl - 7 - nitro - and 6,8 - dichloro - 2 - acetonyl - benzoxazinones - 4 from corresponding anthranilic acids, diketene and acetic acid or anhydride, and 2-cyanomethylbenzoxazinone - 4 from cyanoacetylanthranilic acid and acetic anhydride. |
| priorityDate | 1968-05-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 37.