http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2657871-C1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cae55425ed8fd76d9a4770f7c06c3435 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2-86 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C2-86 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C13-72 |
| filingDate | 2017-10-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2018-06-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_118c364b9dfd2171b21a8ee8998b7c07 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6d2cd77ffd808c1b1d3805eadb53eda1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_29dc953e5631cb93f3d5b588a571d72f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e79ddccd2c69e7bcff65402421826c1b |
| publicationDate | 2018-06-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2657871-C1 |
| titleOfInvention | Method for obtaining spiro[2.4]hepta-4,6-diene |
| abstract | FIELD: technological processes. n SUBSTANCE: method is proposed for the preparation of spiro[2.4]hepta-4,6-diene, which consists in preheating to boiling (40–45 °C) mixtures of 1,2-dichloroethane with cyclopentadiene are added 50 % wt. aqueous NaOH solution in the presence of a phase transfer catalyst and the process is carried out at a molar ratio of cyclopentadiene : 1,2-dichloroethane : catalyst : NaOH = 1 : 1 : 0.001–0.01 : 2.5–6 followed by isolation of the desired product from the reaction mixture by steam distillation. Process is carried out in a single reactor and the yield of the desired product is 75–90 %. n EFFECT: increase the yield of the target product (75–90 %), as well as simplify the process technology by conducting all the stages in one reactor without the use of vacuum distillation and organic solvents, which increases its environmental friendliness. n 3 cl |
| priorityDate | 2017-10-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 43.