HuagongsheHuagongshe Chemistry Print Report · For research reference only
1,3-Diethyl 2-oxopropanedioate → HCID 70549630, compound
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | 1,3-Diethyl 2-oxopropanedioate | HCID 69105 | — |
| Reactant | HCID 6320219 | HCID 6320219 | — |
| Reactant | 4,5-Dibromobenzene-1,2-diamine | HCID 12196944 | — |
| Solvent | Ethanol | HCID 702 | — |
| Product | HCID 70549630 | HCID 70549630 | — |
Reaction Steps
4,5-Dibromo-o-phenylenediamine was cyclized to the corresponding quinoxaline carboxylic acid ester by the procedure of Preparation 1 utilizing 4.1 g. of the diamine and 2.7 g. of diethyl ketomalonate in 75 ml. of anhydrous ethanol. Ethyl 6,7-dibromo-3,4-dihydro-3-oxo-2-quinoxaline carboxylate thus prepared melted at 235°-236° C. (yield=3.9 g.).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04252954 |
| Source dataset | uspto-grants-1981_02 |
| ORD ID | ord-a84ec79716ee4c43bcde6aea1cca84e2 |
| Source note | uspto-grants-1981_02 |