http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-478942-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5d9f3ca41550d315642580237250c5b0 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C7-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C7-346 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C7-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C7-34 |
| filingDate | 1936-04-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1938-01-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-478942-A |
| titleOfInvention | Improvements in and relating to colour forming developers and processes of colour development |
| abstract | 6-(o -Chloracetyl)-tetrahydronaphthalene is prepared by the action of chloracetyl chloride on tetrahydronaphthalene in carbon disulphide in the presence of aluminium chloride. a -Naphthoylacetonitrile is prepared by adding a warm aqueous solution of 3 molecular parts of sodium or potassium cyanide to a warm alcoholic solution of a -naphthacyl chloride, heating the mixture on a steam bath and pouring it into dilute acid. 4-Methoxy-a -naphthoylacetonitrile, 2-methyl-a -naphthoylacetonitrile, 4-methyl-a -naphthoylacetonitrile, b -naphthoylacetonitrile, 6-methyl-2-naphthoylacetonitrile, tetrahydro-b - naphthoylacetonitrile, 3 - o - cyanacetyl - dibenzfuran, p(p<1>-chlorophenyl)benzoylacetonitrile, p-phenylbenzoylacetonitrile, p-phenoxybenzoylacetonitrile, 1-o -cyanacetyl-coumarone and 3-o -cyanacetylacenaphthene may be prepared in a similar manner from 4-methoxy-1-chloracetylnaphthalene, 2-methyl-1-chloracetylnaphthalene, 4 - methyl - 1 - chloracetyl p - naphthalene, b -naphthacyl bromide, 2-methyl-6-naphthacyl bromide, 6-(o -chloracetyl)-tetrahydronaphthalene, 3 - o - chloracetyl - dibenzfuran, p(p<1>-chlorophenyl)phenacyl bromide, p-phenylphenacyl chloride, p-phenoxyphenacyl chloride, 1-o -bromacetyl-coumarone and 3-o -chloracetylacenaphthene respectively. 1-o -Bromacetyl-4-chlorocoumarone is prepared by bromination of 1-acetyl-4-chlorocoumarone in methyl alcohol or chloroform. 1-o -Cyanacetyl-4-chlorocoumarone is prepared by adding 1-o -bromacetyl-4-chlorocoumarone to a warm alcoholic suspension of sodium cyanide, filtering off the sodium salt of the cyano-ketone, dissolving in water and acidifying. |
| priorityDate | 1935-03-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 56.