http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-463341-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f131a39f6301c6a0a78bb3c268666472 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-64 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-64 |
| filingDate | 1936-01-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1937-03-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-463341-A |
| titleOfInvention | Improvements in or relating to the preparation of protocatechuic aldehyde from heliotropine |
| abstract | Protocatechuic aldehyde is prepared by treating one molecular proportion of heliotropine dissolved in a polychlorinated aliphatic hydrocarbon with at least two molecular proportions of anhydrous aluminium chloride, heating the resulting aluminium compound in the presence of an aromatic hydrocarbon, preferably employed in equimolecular quantity, which combines with the methylene dichloride formed by splitting of the methylenedioxy bridge, and finally decomposing the product with water. Solvents mentioned are ethylene dichloride, methylene dichloride, chloroform, carbon tetrachloride and tetrachlorethane, whilst as aromatic hydrocarbons may be employed benzene, toluene, and xylene. An example is given. German Specification 591,888 is referred to. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-03043976-A1 |
| priorityDate | 1936-01-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 35.