http://rdf.ncbi.nlm.nih.gov/pubchem/patent/HU-184620-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a157f5faa443ba5bb3367371f1e2a6c7 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-74 |
| filingDate | 1979-11-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_277d398884153777c18f187062b2b6ca http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6251a5ae6fdd74402fce41c85d91c5cf http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_717e899a6dab01f121814019d26679db http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2d678c3cf330243ae41246318252e5e9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ecb94c5d63e94331f4d2d0995394fdcc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_df614ac4a73d8fc1025c36f9a4ccce5c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cc9710f2102aac36eaa0fb1774e3da34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_952140c31925e0210625e388e3561842 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ec8acefa086c873ef19fa5f17deefb0e |
| publicationDate | 1984-09-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | HU-184620-B |
| titleOfInvention | Continuous process and cascade apparatus for producing alkyl-esters of cyclopropane-carboxylic acid |
| abstract | According to the invention, cyclopropanecarboxylic acid esters are produced by a continuous process. In the general formulas mentioned below, the substituents are as follows: C 1 -C 4 alkyl; R 1 is hydrogen or C 1-4 alkyl; and R 2 and R 3 are halogen or C 1-4 alkyl. In the process, cyclopropanecarboxylic acid esters of formula (1) are prepared by reacting a glycine ester of formula (II) with a diazo ester of formula (III) and coupling the product with dichloroethane with pendadiene (IV), that the aqueous solution of the glycine ester salt is adjusted to a pH of 5.0 to 6.0 before the reaction is started, the diazotization is maintained at pH 4.0-5.0, and the diazotization is carried out continuously in a cascade of at least 3 units, the resulting the diazoester / dichloroethane solution is subdivided continuously into a solution of the diene of formula IV and the alkane or alkenecarboxylic acid copper (II) salt catalyst which is flowing through a further reactor line of at least 3 units. The resulting reaction mixture is continuously introduced, the phases are separated and the organic phase is subjected to alkaline washing. The solution of the diazoester is preferably washed with an aqueous solution containing a complexing agent to remove metal ion. h2n-cn2-coo-r II. N = N = CH-C00-R III. R 'r ^ c-ch-c-c <^ 3 IV. -1- |
| priorityDate | 1979-11-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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