http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S5572180-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_88fbcd2a70a3c49d0aed69a000d55909 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D305-12 |
| filingDate | 1978-11-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_456e64552f0086f79e15b7a0a14ecbac http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_116168b8f1f7010b7e742e903d3c9494 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6dbef17414d9cda61702ff3cf972f650 |
| publicationDate | 1980-05-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S5572180-A |
| titleOfInvention | Preparation of beta-butyrolactone |
| abstract | PURPOSE: To prepare the title compound useful as a raw material of polymer and an intermediate of drug, economically, by reacting acetaldehyde with ketene in para-acetaldehyde solvent containing a specific amount of THF, in the presence of BF 3 . n CONSTITUTION: β-Butyrolactone is prepared by reacting acetaldehyde with ketene in para-acetaldehyde solvent containing 2W25wt%, pref. 5W10wt% of THF, in the presence of BF 3 or its complex, pref. at 10W15°C. The yield of butyrolactone in the above process is comparable to that in the conventional process using expensive THF solvent. Since the amont of THF in the solvent is sufficiently low, the solvent can be wasted without recovering the THF with negligible economic demerits. n COPYRIGHT: (C)1980,JPO&Japio |
| priorityDate | 1978-11-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 22.