http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-652276-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_30432c021c19453629a3b69ce104640e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C201-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C201-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C201-12 |
| filingDate | 1948-12-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1951-04-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-652276-A |
| titleOfInvention | Process for the manufacture of aromatic nitro compounds |
| abstract | Aromatic nitro compounds are manufactured by nitrating compounds of the general formula <FORM:0652276/IV (b)/1> (wherein R3 represents hydrogen or an alkyl radical of not more than 4 carbon atoms, and R4 and R5 are the same or different and represent hydrogen, halogen, or alkyl or alkoxy radicals of not more than 4 carbon atoms). The nitration is effected with concentrated sulphuric acid-nitric acid mixture, with 100 per cent nitric acid or with fuming nitric acid, and the temperature should be kept between -20 DEG and +10 DEG C., preferably about 0 DEG C. The starting materials and the products exist as structural (regular and pseudo) and optical isomers. Examples describe the nitration of the diacetate of dl-reg.-1-phenyl-2-dichloroacetamidopropane-1 : 3-diol, and of the triacetyl derivatives of dl-#Y- and dl-reg.-1-phenyl-, dl-#Y-1 - o - methylphenyl-, dl - #Y - 1 - m - methoxyphenyl-, dl-reg.-1-(31 : 41-dimethylphenyl)- and 1 - o - chlorophenyl - 2 - aminopropane - 1 : 3 - diol and dl - #Y - 2 - amino - 3 - phenylbutane - 1 : 3-diol. Specifications 652,272, 652,273, 652,274, 652,275, 652,277, 652,278, 652,279 and 652,280 are referred to. |
| priorityDate | 1948-03-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 19.