HuagongsheHuagongshe Chemistry Print Report · For research reference only
Ethyl cyanoacetate → Ethyl 1-cyano-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropane-1-carboxylate
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Ethyl cyanoacetate | HCID 7764 | — |
| Reactant | Calcium Carbonate | HCID 10112 | — |
| Reactant | 1,1-Dichloro-3,4-dibromo-4-methylpent-1-ene | HCID 20574281 | — |
| Catalyst | Copper | HCID 23978 | — |
| Catalyst | Calcium Chloride | HCID 5284359 | — |
| Solvent | Ethanol | HCID 702 | — |
| Product | Ethyl 1-cyano-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropane-1-carboxylate | HCID 12898169 | — |
Reaction Steps
A mixture of ethylcyanoacetate, 1,1-dichloro-3,4-dibromo-4-methylpent-1-ene and calcium carbonate is heated in ethanol (100 parts by volume) at reflux in the presence of calcium chloride (22.2 parts) and copper salt as catalyst. The crude ethyl 1-cyano-3-(2',2'-dichlorovinyl)-2,2-dimethylcyclopropane-1-carboxylate is isolated as described in Example 77. Details are given in the following table:
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04284582 |
| Source dataset | uspto-grants-1981_08 |
| ORD ID | ord-b83bdd34c25d451badfaded055888d16 |
| Source note | uspto-grants-1981_08 |