http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103102285-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C255-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C253-30 |
| filingDate | 2013-01-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-07-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2015-07-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103102285-B |
| titleOfInvention | The preparation method of p-aminophenyl acetonitrile |
| abstract | The invention discloses the preparation method of p-aminophenyl acetonitrile, in pressure reaction still, add the para orientation nitration of certain proportioning, ethanol and catalyzer, pass into hydrogen with in argon replaces reactor after air, under controlling certain pressure and temperature, react for some time; Leave standstill and open pressure reaction still again, steam most of etoh solvent; Place crystallization, filter, dry, obtain thick product; By thick product 95% ethyl alcohol recrystallization, activated carbon decolorizing, obtains light brown crystalline; Wherein, the mass ratio of para orientation nitration, ethanol and catalyzer is 1:6.25:0.2-0.4, and the mass concentration of ethanol is 95%, and catalyzer is mass concentration 5-10%Pd/C, and reaction pressure is 0.3-0.4MP, and the reaction times is 4h, when temperature of reaction is 30 ~ 50 DEG C.Reaction conditions of the present invention is gentle, and selectivity is good, and side reaction is few, is easy to purifying, does not need other reductive agents and additive, and only need hydrogen and a small amount of catalyzer, production cost is low, and aftertreatment is simple, and pollute few, yield is high, energy-conserving and environment-protective. |
| priorityDate | 2013-01-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 37.