http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102391086-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3966ddee295e08cc6fcce4695c77f91b http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a1044b1e62c32357eba8df14f14c66ba |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-75 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-653 |
| filingDate | 2011-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2014-01-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_21d55c99a88fda52bbda6d2a74f024d8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cebb54aba4b7e1d0cbb7f34781d528b0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_290f1c2ef7280d4992d8c452e0e52141 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_777bad13acc07d9eed7434708f06b53c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4b19d3bda550d4803fe5b5a200f51c66 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b6ed9d86a2a919b65788a31743c25745 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8a5709df1b527fd458d9bd0465940bc9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_622108fb9b40d5f98da1632915deeed7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_77cbf6f4fb76d4e1650539900f306009 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7ed7acbd48a83e63a87cd9492fc4beb1 |
| publicationDate | 2014-01-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102391086-B |
| titleOfInvention | Novel method for preparing 3-methylene nopinone |
| abstract | The invention discloses a novel method for preparing 3-methylene nopinone. The method comprises the following steps of: performing aldol condensation on nopinone serving as a raw material and formaldehyde aqueous solution under the catalytic action of NaOH or KOH; and dehydrating to obtain 3-methylene nopinone. Compared with the prior art, the method has the outstanding advantages: the synthesis process of 3-methylene nopinone is simplified, the defect that a target product can only be obtained by performing hydroxyl methylenenation and oxidation steps on nopinone in the conventional synthetic method is overcome, and the disadvantages of the need of using hydroxyl methylenenation catalysts such as NaNH2, NaOM3, NaOC2H5 and the like in the anhydrous environment and severe requirement on the experimental environment existing in the conventional process are overcome. Meanwhile, solid potassium permanganate is taken as an oxidant, so that the defects of high toxicity, high price and the like existing in the conventional oxidants, i.e., OsO4 and O3 are overcome, the production cost of 3-methylene nopinone is reduced, and the production safety is enhanced. The novel method has high practicability, and good economic and social benefits can be generated. |
| priorityDate | 2011-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 59.